You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: My name is Mark Martin. I just need your help in booking a plane ticket from DCA to SFO.

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, my planned trip dates are from 02/29 to 03/02.

ASSISTANT: There is a flight available on your requested dates from Delat airlines with 1 connecting flight.

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked with flight 1023. You are most welcome.

USER: Thank you for your help.