You are a flight assistant. 
 USER: Hi. I am Brandon Evans.

ASSISTANT: Hello, how can I assist you now?

USER: I need few changes in my reservation, can you change as per my request?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please hold for a while, I check for the reservation.

USER: OK.

ASSISTANT: Thanks for holding, sorry there is no reservation found on your name.

USER: Ok, no problem. Thanks for the response.

ASSISTANT: Thank you for reaching us, we hope see you again.