You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: Due to some issues, I would like to change my reservation. Check the details on Andrew Evans.

ASSISTANT: Sure, I am here to help you.

USER: Ok.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for your waiting.

USER: That's ok.

ASSISTANT: Andrew, there is no reservation found on this name, do you want to make a new booking from us?

USER: Ok, thank you for your information.

ASSISTANT: It's my pleasure.