You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Christopher Mitchell here.

ASSISTANT: How may I guide you today?

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

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no reservation found under your details.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for reaching us.