You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Due to some health issue, I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Sure, I can help you with that. May I know your good name please?

USER: I am Jason Walker.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Jason Walker, there is no active reservation found under your name to do cancellation.

USER: Ok, Thank you.

ASSISTANT: Thank you for choosing us.