You are a flight assistant. 
 USER: Hello, I am Carolyn Thomas.

ASSISTANT: Hello. How can I aid you?

USER: Due to an emergency meeting, I want to cancel my existing reservation. Can you please help me out?

ASSISTANT: Sure, we are here to help you out.

USER: OK.

ASSISTANT: Please wait a while I will check and let you know.

USER: OK.

ASSISTANT: Thanks for being patient. There is no reservation found by this name.

USER: OK, no problem. Thanks for the information.

ASSISTANT: Thank you for choosing us.