You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, What kind of help are you expecting from our side?

USER: I want to cancel my recent reservation due to postpone of my exams. Can you please help me in that?

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

USER: Ashley Mitchell here.

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

USER: Sure.

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

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.