You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: Due to snow fall, I want to change my reservation. Can you help me?

ASSISTANT: Sure,I can help you. Can I know your name?

USER: Michael King here.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for being waiting. We didnt found any reservation by this name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for choosing us.