You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need to cancel my reservation as I am not able to make my trip. Can you help me about that?

ASSISTANT: Sure, I am here to assist you. May I know your name?

USER: Thank you for assisting my request. My name is Thomas Walker.

ASSISTANT: Thank you. Please wait for a while. I will check your reservation status and get back to you.

USER: Sure.

ASSISTANT: Sorry to tell you that there is no reservation found under your name in our database.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: You are most welcome and thank you for contacting us.