You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Margaret Roberts. I want to cancel my recent reservation, due to exams. Can you please cancel my ticket?

ASSISTANT: Yes, I will check for your previous reservation.

USER: Sure, take your time.

ASSISTANT: Your ticket has been cancelled successfully.

USER: That's fine.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your help.