You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Debra Evans.

ASSISTANT: How can I assist you?

USER: Due to some seminars, I am going to cancel my recent reservation. Can you please help me in cancelling the reservation?

ASSISTANT: Ok, please wait. Sorry, no reservation found on your name to cancel.

USER: Not an issue, anyhow thank you very much for your service.

ASSISTANT: Thank you for reaching us.