You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How  can I be your helping hand?

USER: Could you cancel my recent reservation where I booked a ticket for a trip, as I have got an  opportunity to join  in an medical academy. For this reason I have to cancel my reservation.

ASSISTANT: Sure, please let me know your name.

USER: I am Kenneth Perez.

ASSISTANT: Sorry, there was no reservation found with your name.

USER: Ok.

ASSISTANT: Thank you for opting us.

USER: Thank you for being my helping hand.