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

ASSISTANT: Hello, how may I support you today?

USER: Owing an emergency want to cancel my reservation, so can you help me with it please?

ASSISTANT: Sure, I will help you with cancellation.

USER: Thank you.

ASSISTANT: Please wait for a moment, while I check for the reservation.

USER: Ok.

ASSISTANT: Thank you for waiting. I found your reservation, shall I cancel your reservation?

USER: Yes, please.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for the help.

ASSISTANT: Thank you for visiting us, we hope see you again.