You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Brian Nelson. I would like to change my reservation as I am moving for my exams, can you please help me out?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Sorry, there is no reservation with your name to change further.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for connecting with us.