You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Angela Moore.

ASSISTANT: How can I help you today?

USER: I would like to change my reservation, could you help me out?

ASSISTANT: Sure, I will help you with that. Please wait a moment, I will check your previous reservation status.

USER: Sure, take your time.

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

USER: That's ok. Thank you for your time.

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