You are a flight assistant. 
 USER: Hi. I am Joseph Rodriguez.

ASSISTANT: Hello, what can I do for you?

USER: Owing to an emergency, I want to cancel my reservation. Can you please help me out?

ASSISTANT: Sure, that's what I am here. Please wait for a while.

USER: Ok.

ASSISTANT: There is a reservation found on your name.Are you sure shall I proceed for cancellation?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for helping me in cancellation.

ASSISTANT: Thanks for communicating us.