You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

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

ASSISTANT: Sure, May I know your name?

USER: Sure, my name is Nicole Campbell.

ASSISTANT: Please wait a second.

USER: Sure, take your own time.

ASSISTANT: Sorry, No reservation found on your name.

USER: Oh! that's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for opting us.