You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket from SFO to DCA, can you please help me out?

ASSISTANT: Ok, please let me know your dates of journey to book a ticket.

USER: My preferable dates are May 7 and May 9 respectively.

ASSISTANT: Ok, please can I know your specifications?

USER: I am looking for a economy class flight and a single connecting flight limit.

ASSISTANT: Ok, please can I know if you need anything else?

USER: No.

ASSISTANT: Ok, there is a economy class flight with 1 connection limit and the airfare is 100. Can I book a flight 1019?

USER: Good to hear, please book for this flight.

ASSISTANT: Ok, please can I know your name to confirm?

USER: George Phillips here.

ASSISTANT: Ok, the flight ticket is confirm and the airlines is UA. The depart time is 14:00PM and arrival time is 8:00AM.

USER: Thank you for assisting me.

ASSISTANT: Thank you for availing our service, have safe journey.