You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Kevin Moore.

ASSISTANT: How can I help you?

USER: Due to some personal problems, I would like to cancel my recent reservation. Please help me out.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Sorry to tell you, there is no reservation found with your name in our data base.

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

ASSISTANT: Welcome, thank you for contacting us.