You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I want to cancel my recent reservation, Can you please me in that?

ASSISTANT: Sure, I will help you with that. May I know your name please?

USER: My name is Melissa King.

ASSISTANT: I am sorry to say that there is no reservation found under your details.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.