You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I oblige you?

USER: Owing to emergency I want to cancel my recent reservation, can you help me with that cancellation?

ASSISTANT: Sure, I am ready to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: My self Jonathan Miller.

ASSISTANT: Thank you for waiting, I was cancelled your reservation successfully.

USER: Thank you.

ASSISTANT: Thank you for choosing us.