求几句英语对话

过几天要请老外上司吃饭,在饭店里.是一对夫妻,女的怀孕了
请帮忙给几句对话,到时候给我临场发挥下
一,"欢迎你们的到来"怎么说??
他们大概会怎么回答?我该回复
"里面请"怎么说?

二,"预祝你们有个漂亮健康的宝宝"或"为你们未来的宝宝,干杯,祝他漂亮健康"怎么说
他们一定会说THANK YOU...我会哪种"不用谢",比较合适

三,结束后,说再见,怎么说比较礼貌,合适?

如果关系好，可以给个hug （拥抱），然后说welcome。（当然也要有个称呼，可以直呼其名，或者他。。。。视你们的关系而定）可以称赞一下他媳妇，说他很beautiful。
或者说thanks for coming.(感谢您的到来)，
他们应该说：thanks for inviting us,we are very happy (horned)非常开心（荣幸）你邀请我们。
你回答you are welcome(不用谢就可以)
里面请：this way please. 用手势示意，把他们领进去。
祝酒的时候可以提未来小宝宝：With the wine of the host, I request you all to raise our glasses and drink.To the future baby, may him beautifl and healthy.

结束语：Thanks for coming, I hope you like the dinner...... Good night. 他们应该会说：thanks for inviting us 然后夸夸食物 等~~

"欢迎你们的到来"-hello you two,i'm so happy that you come
他们大概会怎么回答-why wouldn't i come(something like that,probably)
你应该说-I thought you're too busy
"里面请"-please,this way
"预祝你们有个漂亮健康的宝宝"-hope that you've a pretty baby
"不用谢"-don;t sweat it
(这些都是意见)

一I'm glad to see you.Welcome.
Thank you
Inside,please
二I wish you to have a pretty and healthy baby.