You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I provide service to you?

USER: Myself Dennis Moore. I need to cancel my recent reservation, can you please help me out?

ASSISTANT: Sure, we are here to help you. Please wait for a while.

USER: Thank you for your kind response.

ASSISTANT: Sorry we couldn't find any reservation with your name.

USER: That's ok, thank you for searching the details.

ASSISTANT: Thank you for choosing us.