You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Please inform me, how may I best assist you?

USER: I am Frank Harris want to cancel my reservation due to pfrepone of my exams. Can you help me in cancelling?

ASSISTANT: Sure, may I know your good name to track the details, Can you please provide me?

USER: I have already provided.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there is no active reservation found on your name.

USER: Thank you for your help.

ASSISTANT: Thanks for reaching us, have a happy day.