You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today/.

USER: Myself Andrew Thompson. Due to some business meeting, I am going to cancel my recent reservation. Can you please help me for this?

ASSISTANT: Sure, we are here to help you.

USER: Thank you very much for quick access.

ASSISTANT:  Sorry, no reservation found on your name to cancel.

USER: Not a big problem, anyhow thank you very much for your information.

ASSISTANT: Welcome, thank you for reaching us.

USER: You are welcome.