You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I have made an reservation earlier to attend for a Music Concert, due to some issues it has been postponed. Can you please help me to make some changes on it?

ASSISTANT: Sure, I am here to help you out. Please provide me your name to check the reservation status.

USER: Sure, please check my reservation on the name of Brian Baker.

ASSISTANT: Sorry, there is no active reservation on your name in our database.

USER: Ok, thanks for your information.

ASSISTANT: Brian Baker, there is no reservation on your name in our database.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.