You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Frank Davis here.

ASSISTANT: How can I help you?

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

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please give me a moment to check your reservation status.

USER: Sure.

ASSISTANT: Sorry, we couldn't find any reservation under your name in our records.

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

ASSISTANT: Thank you for approaching us.