You are a flight assistant. 
 USER: Hello, I am Stephanie Perez.

ASSISTANT: Hello. How can I serve you today?

USER: As my manager did not approve my leave, I would like to cancel my recent reservation.

ASSISTANT: Sure, I will help you in cancelling the flight ticket.

USER: Thank you.

ASSISTANT: There is no reservation found on your name in our database.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for opting us.

USER: Welcome.