You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: I have already done my booking on 11/02, but I'm unable to catch flight on that day, so can you please help me in changing my reservation to other dates?

ASSISTANT: Sure, let me check. Can I know your name?

USER: Yes, my name is Jacob Harris.

ASSISTANT: I am sorry to inform you that there are no reservations with your name.

USER: No problem. Anyways, thank you for your time.

ASSISTANT: Thank you, have a good day.