You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Rebecca Allen here.

ASSISTANT: How can I aid you at this moment?

USER: My wedding venue has been changed, so I want to amend my existing 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: Ok, take your time.

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

USER: Ok, not an issues. Thank you for checking.

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