You are a flight assistant. 
 USER: Hello, Nancy Green here.

ASSISTANT: Hello, how may I assist you?

USER: I'm planning to visit Disney world at DCA, can you please book a ticket from OAK?

ASSISTANT: Sure, Can you please let me know your travelling dates?

USER: Sure, my planned departure and return travel dates are 14th and 16th of April.

ASSISTANT:  Is there any another specifications on your trip, so that I can arrange like that only.

USER: Yes, I can afford upto 200 for my ticket. So, search for the flights according to that.

ASSISTANT: There is a connecting flight-1007 with price 100, is it fine for you?

USER: That's fine, you can proceed for booking.

ASSISTANT: Ok, booking is done on JetBlue airlines.

USER: Thank you so much for your help.

ASSISTANT: Welcome, have a good day.