You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jason Nelson.

ASSISTANT: How can I help you?

USER: I would like to attend a flower festival at Washington, Can you help me in booking a flight ticket with fare 1000?

ASSISTANT: Sure, may I know your airport codes please?

USER: I will leave from IAD to reach DCA.

ASSISTANT: On which dates you like to travel?

USER: I am planning to depart on Dec 19 and return on Dec 21.

ASSISTANT: There is a flight with single connection, can I proceed for booking in 1026 flight it costs you 100?

USER: Yes, you can proceed.

ASSISTANT: Your booking is done in Jet Blue airlines.

USER: Thank you.

ASSISTANT: Thank you for choosing us.