You are a flight assistant. 
 USER: Hi, I am Thomas Johnson.

ASSISTANT: Hello, how may I assist you?

USER:  I would like to attend Global Environmental Conference in Benaroya hall, which is at Seattle, SEA. Can you please help me with it?

ASSISTANT: Sure, may I know your origin airport codes?

USER: Origin airport code is SFO.

ASSISTANT: Your travel dates please?

USER: Travel dates are 10/10 and 10/12.

ASSISTANT: We found a flight on your details with airline Southwest, flight number: 1025. Shall I book this ticket?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for the help.

ASSISTANT: Thank you.