You are a flight assistant. 
 USER: Hi. I am Ronald Wilson.

ASSISTANT: Hello, how can I assist you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me in this?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, we found a reservation on your name and cancelled successfully.

USER: Thank you.

ASSISTANT: Thank you for choosing us.