You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Paul Adams here.

ASSISTANT: How can I help you?

USER: Due to some reason, my concert is postponed. Can you change my reservation?

ASSISTANT: Ok, I will help you. Please wait a moment. No reservation found on your name Paul Adams.

USER: It's ok.

ASSISTANT: You want to know anything else from us?

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.