You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be at your service?

USER:  I am Daniel Perez want to cancel my reservation due to prepone of my meeting.

ASSISTANT: Ok.

USER:  Can you please cancel my ticket?

ASSISTANT: Wait a minute, I will check and let you know the details.

USER: Ok.

ASSISTANT: We found a reservation on your name and it got cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.