You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

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

ASSISTANT: Sure, I can help you with that.

USER: Thank you. Sure, please check the reservation with my name Jack Jones.

ASSISTANT: May I know your name for checking your previous reservation status? Ok, please wait a moment, I will check your reservation status.

USER: Sure, take your time.

ASSISTANT: There is no previous reservation found on your name.

USER: It's ok fine, no problem. Anyway, thank you for your time.

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