You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you?

USER: I want to change my reservation, as my wife is pregnant and she will be alone at home.

ASSISTANT: Sure, may I know your name please?

USER: My name is Joshua Thomas.

ASSISTANT: There is no reservation on your name Joshua Thomas.

USER: No problem with that.

ASSISTANT: Thanks for reaching us.

USER: Thanks for your quick response.