You are a flight assistant. 
 USER: Hello, myself Alexander Perez.

ASSISTANT: Hello, how may I aid you?

USER: In my existing reservation mistakenly I put my destination airport code as origin airport code, please help me in cancelling my reservation.

ASSISTANT: Sure, please wait for a moment.

USER: Nice to hear that, I will wait for your response.

ASSISTANT: I have found a reservation on your name and cancelled it successfully.

USER: Thanks a lot for your quick service.

ASSISTANT: Thank you for approaching us.