You are a flight assistant. 
 USER: Hello. I am Brenda Roberts.

ASSISTANT: Hello. How can I assist you Brenda Roberts?

USER: I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Yes, I will be happy to help you with your concern.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check the records.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, there is no reservation been found on your name to modify as per your concern.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for choosing our agency.

USER: You are welcome.