You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please change my recent reservation? As my planned trip has been postponed to some other dates.

ASSISTANT: Yes, I am here to help you. May I know your name please?

USER: Sure, my name is Gary Hall.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Thank you for your time, sorry no reservation found on your name.

USER: That's ok, thank you for giving the information anyways.

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