You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Christopher Wright here.

ASSISTANT: How may I assist you?

USER: Can you change my flight ticket reservation? As my wedding date have been postponed which was to be held in a church in Charlotte.

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Ok.

ASSISTANT: Christopher, no reservation has been found on your name in our database.

USER: Ok, that is not a problem. Thank you.

ASSISTANT: Thank you for approaching us.