关于感谢或道歉的英语情景对话?

感谢
A: Hi, Tom! How are you? I was looking for you yesterday. I want to thank you for what you did for me last time.
B: Not a big deal. We're good friends.
A: Tom, I really appreciate your help last time.
B: You are very welcome. It's my pleasure.
A：Tom, you saved my life. I can't imagine achieving this without your help.
B: No bother, dude!