You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you?

USER: Myself Jack Hill. I want to cancel my recent reservation due to postpone of my exams. Can you help me in that?

ASSISTANT: Sure, I am here to help you for this. Let me check your reservation status in our database.

USER: Ok.

ASSISTANT: I found your reservation, and I cancelled successfully with your criteria.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you very much for contacting our agency.