You are a flight assistant. 
 USER: Hi. I am Andrew Williams.

ASSISTANT: Hello, how may I assist you?

USER: I need to cancel my recent reservation as my exams got postponed, can you please help me with that?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please whit a moment I will check the reservation data list and I will inform you.

USER: Sure.

ASSISTANT: Sorry Andrew Williams there is no active reservation on your name.

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Thanks for your information.