You are a flight assistant. 
 USER: Hi. Brian Scott here.

ASSISTANT: Hello. How may I help you today?

USER: Can you change my flight ticket reservation?

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no active reservations on your name.

USER: Ok, that is not a problem.

ASSISTANT: Thank you for reaching our service.

USER: Thank you.