You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, wait for some time.

USER:  Ok.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: Thank you for your response.

ASSISTANT: Thanks for choosing us.