You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, may I know your good name?

USER: Sure, my name is James Mitchell.

ASSISTANT: Please wait for a moment.

USER: Sure, I'll wait for your response.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

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

ASSISTANT: Thank you for reaching us.