You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I made a reservation for round trip and got a connecting flight but now I want change a reservation with a direct flight. Can you please help me to change it?

ASSISTANT: Sure, may I know your name to change your reservation as per your request.

USER: Sure, you can check my reservation on the name of Brian Moore.

ASSISTANT: Ok, please wait a while let me check the reservation list and know you the current status.

USER: Sure.

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

USER: Ok, not an issue. Thanks for your help.

ASSISTANT: Thank you for reaching us. Hope to serve you again.