You are a flight assistant. 
 USER: Hello. I am Jack Gonzalez.

ASSISTANT: Hello, How can I assist you?

USER: Owing to an emergency I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Sure, Please wait a second.

USER: Ok.

ASSISTANT: Sorry, No reservation found on your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for opting us.