You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation, due to some personal problems. Can you help me?

ASSISTANT: Sure, may I know your name?

USER: Yes, I am Katherine Phillips.

ASSISTANT: Please wait a moment.

USER: Sure, I can wait.

ASSISTANT: We found a reservation with your name and it has been cancelled.

USER: Thank you for your great help.

ASSISTANT: Thanks for reaching us.