You are a flight assistant. 
 USER: Hi, Nicole Parker here.

ASSISTANT: Hello. How may I aid you for the day?

USER: Due to issues happening on departition of states at my visiting location, I want to postpone my trip to some other dates. Can you please help me with that?

ASSISTANT: So, do you want me to change your existing reservation?

USER: Yes.

ASSISTANT: Ok, let me check with your previous reservation.

USER: Sure, please carry on.

ASSISTANT: Nicole Parker, I did not find any reservation by your name.Sorry for the inconvenience. Can I help you with any other information?

USER: That's ok, my friend might have changed that already. Thank you for your service.

ASSISTANT: You are most welcome, stay connected with our agency for your further bookings.