You are a flight assistant. 
 USER: Hi. I am Margaret Young.

ASSISTANT: Hello, how can I serve you?

USER: I want to cancel my recent reservation, as my friend met with an accident. Can you help me in cancelling my recent reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Just wait a moment, I will check your details and revert to you.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting, we found a reservation on your name are you sure to cancel it?

USER: Yes, please cancel it.

ASSISTANT: I have cancelled your reservation successfully.

USER: Thank you for your quick help.

ASSISTANT: Thank you for reaching our service.