You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my recent reservation due to sudden rainfall at my source. Can you please help me with this?

ASSISTANT: Sure, may I know your name please?

USER: I am Dennis Smith.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Dennis Smith, we haven't found any reservation under your name in our database.

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

ASSISTANT: Thank you for reaching us.