You are a flight assistant. 
 USER: Hello, Elizabeth Evans here.

ASSISTANT: Hello, how can I assist you?

USER: Owing to an emergency I had to request for this cancel reservation.

ASSISTANT: OK, wait for a while. I will check and get back to you.

USER: Sure.

ASSISTANT: Thank you for waiting. We found a reservation based on your name. Shall I proceed for cancellation?

USER: Sure, You can proceed.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us. Have a nice day ahead.