You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Can you please cancel my reservation?

ASSISTANT: Sure, I can cancel your reservation right now. Before that I need to know your good name please?

USER: Charles Thompson here.

ASSISTANT: Ok, Please allow me a moment to check for the previous reservation in our database.

USER: Sure, take your time.

ASSISTANT: We are sorry to say that, there is no active reservation found on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thanks for reaching us, wish you a great day.