You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you for today?

USER: My final exams are postponed. Can you please help me for changing the existing reservation?

ASSISTANT: Sure, could you please provide your name to check the details of your reservation?

USER: My name is Susan Perez.

ASSISTANT: Sorry to say, I did not found any reservation on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us, have a good day.

USER: Thank you for your information.