You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I am Mary Martinez. Please help me in cancelling my recent reservation?

ASSISTANT: Sure, wait a second I will check the status.

USER: Ok, take your own time.

ASSISTANT: Sorry to inform you that there is no reservation found on your name to cancel the reservation.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for choosing us.