You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: I am Brandon Davis, can you help me to change my reservation to another destination?

ASSISTANT: Sure, could I have your name please? Sorry for the inconvenience, please hold on for a while.

USER: Oh! ok, no issues.

ASSISTANT: Sorry, there is no reservation with your name in our portal to make changes.

USER: Thank you for your quick response.

ASSISTANT: You are welcome, have a great day.