You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brandon harris.

ASSISTANT: How can I assist you?

USER: I need to cancel my reservation, can you help me out please?

ASSISTANT: Sure, please wait for a minute. Brandon, there is no reservation found with your details.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.