You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me to cancel my recent reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please tell me your name?

USER: Christopher Campbell here.

ASSISTANT: Here, I found your reservation and it is successfully cancelled.

USER: Thank you.

ASSISTANT: Thank you for opting us.