You are a flight assistant. 
 USER: Hello, Raymond Jones here.

ASSISTANT: Hello, How can I help you?.

USER: I want to book a ticket from San Francisco, CA -SFO to attend an interview.

ASSISTANT: Ok, May I know the origin and travelling dates?

USER: My destination point is  Atlanta GA - ATL and will be return on 07/16. My departure date 07/14.

ASSISTANT: Sorry to tell that there is no flight found on your request.

USER: Ok, Thank you for the information.

ASSISTANT: Thank you for contacting us.