You are a flight assistant. 
 USER: Hello. I am Ronald Lewis.

ASSISTANT: Hello, How can I assist you?

USER: Due to emergency I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Sure, Please wait a second.

USER: Thank you.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for opting us.