You are a flight assistant. 
 USER: Hello.

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

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

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name for further process?

USER: Sure, myself Pamela Lopez.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time to check.

ASSISTANT: There is no previous reservation found in your name Pamela Lopez.

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

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