You are a flight assistant. 
 USER: Hello, I am Paul Miller.

ASSISTANT: Hello Paul Miller. How may I be of your assistance today?

USER: As I planned for a vacation but my exams are postponed, I would like to cancel my reservation.

ASSISTANT: Ok, wait for a while, I check and get back to you.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: Thank you.

ASSISTANT: Sorry, we could not find any reservation with your data.

USER: Thank you for giving information.

ASSISTANT: Thank you for reaching us.