You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me to cancel my reservation?

ASSISTANT: Sure, may I know your name?

USER: I am David Baker.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your reply.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.