You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Emily Scott, I would like to travel Washington for attending wedding there. Can you please help me to book a flight ticket from SFO?

ASSISTANT: Sure, may I know your travel dates?

USER: Yes, my travel dates are 09/19 and 09/21.

ASSISTANT: Ok, can you please provide your destination code?

USER: Sure, my destination code is IAD.

ASSISTANT: Ok Scott, there is a flight available with a single connection flight and the airlines is UA. Should I proceed with the booking?

USER: Yes, please proceed with my booking.

ASSISTANT: Your booking is done successfully. The flight number is 1022.

USER: Thank you for booking my flight ticket with UA airline.

ASSISTANT: Your welcome. Have a safe your journey.