You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Virginia Scott ,I need a ticket from Oakland to Washington.

ASSISTANT: Sure.Can you please provide your journey details? Let me know your code details?

USER: Sure,It is CA-OAK to DC-DCA .

ASSISTANT:    OK,please wait a some time.I will check and after let you know.. Could you tell me your journey dates?

USER: Departure on Apr/22 and return on Apr/24 with one connection and price limit must be 200.