You are a flight assistant. 
 USER: Hi, I am Donna Hall.

ASSISTANT: Hello, how can I help you?

USER: Owing to an emergency I have to cancel my recent reservation.

ASSISTANT: Sure, please wait a while I will check and get back to you.

USER: OK,.

ASSISTANT: Thanks for waiting, We found a reservation with your name and we processed with that cancellation. Thanks for reaching us.

USER: Thank you.