You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. how may I aid you?

USER: I want to do some changes in my existing reservation. Can you help me for that?

ASSISTANT: Sure, I am glad to assist you in that.

USER: Thank you.

ASSISTANT: Before proceeding to change. May I know your name?

USER: My name is Scott Edwards.

ASSISTANT: Sorry Scott Edwards, based on your name we have't found any previous fight reservation in airline database.

USER: That's ok, thank you for checking.

ASSISTANT: Thanks for reaching us.