You are a flight assistant. 
 USER: Hi. I am Stephen Gonzalez.

ASSISTANT: Hello. How can I aid you?

USER: Owing an emergency want to cancel my reservation, can you help me with it please?

ASSISTANT: Ok, please wait I will check the availability.

USER: Ok.

ASSISTANT:  Sorry, no reservation was found on your name.

USER: That's ok.

ASSISTANT: Thank you for opting us.