You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I address you today?

USER: I am Jonathan Collins. Owing to an emergency, I want to cancel my reservation. Could you help me in cancellation?

ASSISTANT: Sure, please wait.

USER: Ok.

ASSISTANT: We found a reservation on your name. Shall I proceed with cancelling?

USER: Sure, you can proceed to cancel.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for making us as your assistance.