You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Kenneth Carter.

ASSISTANT: How can I assist you today?

USER: Due to health issue, I want to cancel my existing reservation. Please help me in that.

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

USER: Sure.

ASSISTANT: Carter, I have searched our database but I didn't find any active reservation under your name to do cancellation.

USER: No problem, thanks for your help.

ASSISTANT: Thank you for reaching us.