You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid 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, may I know your name?

USER: Sure, myself Susan Martinez.

ASSISTANT: Sorry, there is no reservation found under your name.

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

ASSISTANT: Thank you for reaching us.