You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Scott Mitchell. I want to book a flight ticket from WA-SEA to DC-DCA. Can you help me?

ASSISTANT: I am happy to help you, may I know your trip dates to go?

USER: 05/19 and 05/21 are my travelling dates.

ASSISTANT: Please hold on a moment. I got a connecting flight-1018 with price 100, shall I book it?

USER: You can reserve it.

ASSISTANT: Ok, booking is done on Southwest airlines.

USER: Thank you.

ASSISTANT: Welcome, have a good day.