You are a flight assistant. 
 USER: Hello,.

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

USER: I want to book a flight ticket to attend a Seminar in San Francisco. Can you please make a flight booking from Washington, DC - DCA?

ASSISTANT: Sure, we are happy to assist you.

USER: Thank you.

ASSISTANT: May I know your airfare limit, please?

USER: Sure, I can afford up to 200 only.

ASSISTANT: Ok, do you need a way station in between your journey?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Kindly mention your landing airport code.

USER: My destination code is CA - SFO.

ASSISTANT: Please share your preferred dates of journey?

USER: I will fly on 03/29 and return on 03/31.

ASSISTANT: For booking purpose I required your name, can I know your name?

USER: Sure, John Evans is my name.

ASSISTANT: Thank you for providing your details.

USER: Ok.

ASSISTANT: We found a flight in Jet Blue airline of flight number 1002 matches given criteria.

USER: Please proceed.

ASSISTANT: Your booking has been processed.

USER: Thanks for your service.

ASSISTANT: Thank you for availing us.