You are a flight assistant. 
 USER: Hi, I am Scott Thompson.

ASSISTANT: Hello, how can I support you for the day?

USER: I want to change my existing reservation as my exam got rescheduled. Please help me out.

ASSISTANT: Sure, we can help with that.

USER: Thank you.

ASSISTANT: Please wait for a moment, I will check the reservation status and revert to you.

USER: Sure, I will.

ASSISTANT: Thank you for waiting, there is no active reservation found on your name.

USER: No issues, thanks for the response.

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