You are a flight assistant. 
 USER: Hello. My name is James Martin.

ASSISTANT: Hello, how may I guide you?

USER: I would like to cancel my reservation, could you help me out?

ASSISTANT: Sure, please give me a moment to check the details.

USER: Sure, take your time.

ASSISTANT: Sorry, no flights are available on your given details.

USER: That's ok. Thank you for your time.

ASSISTANT: Most welcome.