You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: As I am a scientist, I want to attend science festival with my students at Washington. Can you help me to book a ticket from DFW to DCA?

ASSISTANT: Sure, kindly share your travel dates.

USER: My trip dates are Mar 20th and Mar 22nd.

ASSISTANT: How much can  you afford for this journey?

USER: Price should not cross 1000.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with your requirement, airline is JetBlue with price 200 and single connection. Shall I proceed with booking?

USER: Go ahead.

ASSISTANT: Your booking is done and flight number is 1003.

USER: Thank you.

ASSISTANT: Thanks for reaching us.\.