You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am William Thompson, I am looking for a flight to attend meeting in San Francisco under 500 fare. Can you please help me?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travel dates are 10/01 and 10/03.

ASSISTANT: Could you please help me with the airport codes?

USER: IAD and SFO are my airport codes.

ASSISTANT: Let me check for the availability of flight.

USER: OK.

ASSISTANT: William, there is a flight available with price 100 and the connection is 1 with 1006 flight number. Is that ok for you?

USER: Yes, I am ok with that.

ASSISTANT: Your booking is confirmed with Southwest airline.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a great day.