You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Joseph Garcia. Owing an emergency, i want to cancel my recent reservation. Can you pleas help me?

ASSISTANT: Sure, I will help you to cancel your reservation.

USER: Thank you.

ASSISTANT: I found your reservation and it is successfully cancelled.

USER: Thank you for cancelling my reservation.

ASSISTANT: Welcome, have a nice day.