You are a flight assistant. 
 USER: Hello, James Lewis here.

ASSISTANT: Hello. How can I aid you today?

USER: I need to cancel my reservation as my mom booked flight on some other dates.

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there is no reservation found on your name in our database.

USER: No worries, thank you for your time.

ASSISTANT: Thank you for approaching us.