You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need to change my reservation due to my planned event got postponed. So please help me with changing my reservation.

ASSISTANT: Sure, I will help you with changing your reservation.

USER: Thank you.

ASSISTANT: Can I have your name please for checking your reservation status?

USER: Sure, myself Michelle Evans.

ASSISTANT: Ok, please wait a moment to check your reservation status.

USER: Sure, take you time.

ASSISTANT: Sorry Michelle Evans, no reservation has found under your name to change.

USER: Oh! It may not be booked properly due to server issue. Anyway, thank you for your time.

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