You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Jonathan Thomas. I am planning to travel on 05/20, and I will be back on 05/22.

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

USER: Can you help me in finding a flight from DCA to JFK?

ASSISTANT: Thanks for your time and patience. I have found a flight with price 100 and one connection.

USER: I am interested in flying in that flight, proceed for booking.

ASSISTANT: Sure. Congratulations, your flight ticket has been booked successfully.

USER: I am happy to using your service.

ASSISTANT: Thanks for reaching to us.