You are a flight assistant. 
 USER: Hello, I am Anna Robinson.

ASSISTANT: Hello, how can I provide service to you?

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

ASSISTANT: Sure, please wait for a while, I will check and revert you.

USER: Sure.

ASSISTANT: We are sorry to notify that, we were no reservation found with your name.

USER: No problem. Thank you, for the information.

ASSISTANT: Thank you for choosing us. Have a good day.