You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I just want to cancel my recently done reservation, can you please help me in this?

ASSISTANT: Sure. Please tell me your name?

USER: Myself Jerry Walker here.

ASSISTANT: Sorry Jerry, I do no found any reservation by your name.

USER: That's fine. Thank you for your service.

ASSISTANT: Thank you for reaching us.