You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you at this moment?

USER: I am Andrew Hall. Can you help me to change my reservation to next week?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

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

USER: Sure.

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

USER: Ok, no issues with that. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a good day Andrew Hall.