You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I am Justin Lopez, I want to book a flight to Washington to spend my holiday wit my family. Can you help me to book a connecting flight?

ASSISTANT: Sure, can you please share your preferred airport locations?

USER: My source point is NY-JFK and my destination is DC-DCA.

ASSISTANT: Can I have your price limit?

USER: My budget is 500 for flight ticket.

ASSISTANT: Please specify your assign dates?

USER: I like to fly from 04/06 and I will return on 04/08.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Thank you for your time, sorry, no flights found on that route.

USER: Thank you for the information.

ASSISTANT: Thank you for approaching us.