You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: Myself Brain Mitchell. My tour dates have been postponed, can you change my reservation?

ASSISTANT: Sure, please give me a minute.

USER: Ok.

ASSISTANT: I'm sorry, there is no reservation found on your name.

USER: It's fine. Thank you for your help.

ASSISTANT: Thank you for reaching us.Have a good day.

USER: Welcome.