You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I would like to go to Washington with my family. Can you do the reservation?

ASSISTANT: Sure, please help me with your airport codes.

USER: My airport codes are OAK-DCA.

ASSISTANT: When you are willing to travel?

USER: My trip dates are 08/03 and 08/05.

ASSISTANT: May I know your name please?

USER: Carolyn Taylor here.

ASSISTANT: May I know how much you can afford for the ticket?

USER: Price should not cross 200.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry, there are no flights found with your journey dates.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.