You are a flight assistant. 
 USER: Hello, I am Brandon Collins.

ASSISTANT: Hello, how may I assist you today?

USER: As my meeting venue got changed to another place I need to cancel my reservation, can you please help me in cancelling?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait a while let me check the reservation list and let you know the status.

USER: Sure.

ASSISTANT: Thank you for your time. Sorry, there is no reservation found in your name in the data list.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for using our service. Have a nice day.