You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How could I serve you today?

USER: Please book a round trip ticket with Washington DC-IAD for science festival.

ASSISTANT: May I know your planned travel dates?

USER: My travel dates are from 05/20 to 05/22.

ASSISTANT: Can I know your name please for documentation?

USER: I am Jonathan Thomas.

ASSISTANT: There is a flight available with JetBlue of flight 1008 and price is 100.

USER: Please book connecting flight.

ASSISTANT: Your ticket has been booked.

USER: Thanks.

ASSISTANT: Thank you for opting us.