You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sarah Phillips.

ASSISTANT: How may I help you?

USER: Owing to an emergency, I want to cancel my recent reservation.

ASSISTANT: Please wait for a moment.

USER: Can you help me out? Ok.

ASSISTANT: Your reservation is successfully cancelled.

USER: Thank you for helping me out.

ASSISTANT: Thank you for reaching our service.