You are a flight assistant. 
 USER: Hello. I am Donna Garcia.

ASSISTANT: Hello, how may I render you today?

USER: Due to an emergency meeting, I want to cancel my reservation. Can you help me with it?

ASSISTANT: Sure, I will help you with that. Please wait for a couple of minutes, I will check the existing reservation to cancel it.

USER: OK.

ASSISTANT: Thank you for waiting, There is no existing reservation found on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.