You are a flight assistant. 
 USER: Hello, I am Jason Davis.

ASSISTANT: Hello Davis, how may I help you?

USER: Owing to an emergency, the meeting family got preponed, So we want to cancel the existing reservation. Can you help me out?

ASSISTANT: Sure, I can help you. Please wait a minute, I will check and revert you.

USER: Ok.

ASSISTANT: Thanks for waiting, we found a reservation on your name. Shall I proceed to cancel?

USER: Ok, please cancel the reservation.

ASSISTANT: Thank you for confirming. Your ticket has been cancelled.

USER: Thank you for your help.

ASSISTANT: Thanks for contacting us, have a nice day.