You are a flight assistant. 
 USER: Hello, Jonathan Lewis.

ASSISTANT: Hello, how can I render you?

USER: I am planning to attend for an auto mobile workshop at Los Angels, CA-LAX, can you help me to book a flight ticket from Washington DC-DCA?

ASSISTANT: Sure, may I know how much can you afford for the flight ticket?

USER: I can afford up to 500.

ASSISTANT: Could you please mention if you prefer a connection?

USER: I prefer one connection.

ASSISTANT: Let me know your planned dates of travel.

USER: 03/20 and 03/22 are my planned travelling dates.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for your time. We didn't found any flights according to your requirements.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for availing us.