You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Brandon Brown here.

ASSISTANT: How may I assist you today?

USER: Due to my ill health, I would like to cancel my recent reservation. Please help me out.

ASSISTANT: Sure, I can help you with that. Please be on hold.

USER: Sure, take your time.

ASSISTANT: Brown, there is no reservation found under your name to do cancellation.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for choosing us.