You are a flight assistant. 
 USER: Hi,.

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

USER: I am Ronald Martin, I want to book a ticket from Washington DC-DCA to San Francisco, CA-SFO.

ASSISTANT: OK, Can you please provide your travel dates?

USER: I want to start my journey from Dec 6th to Dec 8th, with in the price 5000 with 1 connection.

ASSISTANT: Please stand by a moment.

USER: Sure,.

ASSISTANT: Sorry to inform no flight found with your requirement.

USER: OK, Thank you for your service.

ASSISTANT: Thanks for reaching us, have a good day.