You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, we are here to help you. May I know your name please?

USER: Sure, my name is Nicole Harris.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

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

ASSISTANT: Thanks for contacting us.