You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: My name is Steven Phillips.

ASSISTANT: How can I aid you?

USER: Due to weather problems I need to cancel my recent reservation. Can you please help me for that?

ASSISTANT:  Sure, Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for being waiting. We didn't found a reservation by this name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.