You are a flight assistant. 
 USER: Hello, I am Richard Scott.

ASSISTANT: Hello. In which way I can aid you today?

USER: I am planning to do some changes in my existing reservation. Can you please find it?

ASSISTANT: Sure, I can help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check your previous reservation status.

USER: Take your time.

ASSISTANT: There is no previous reservation available in your name.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: You are welcome.