You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like o book a ticket from IAD to OAK. Where I have a meeting to attend.

ASSISTANT: Sure, let me know your travel dates please?

USER: My travel dates are as follows July 13 and July 15.

ASSISTANT: Ok, is there any class preference?

USER: I would like to board by single connection flight.

ASSISTANT: Do you have any airline preference?

USER: No. I have none.

ASSISTANT: May I know your connection limit?

USER: Already provided.

ASSISTANT: Do you have any specific depart and arrival timings?

USER: I have no time concern.

ASSISTANT: Can I know your name please to proceed further?

USER: Betty Lewis.

ASSISTANT: Southwest Airlines is providing connecting flight with the ticket fare of 100 and depart time is 22:00 hours, arrival time is 16:00 hours. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed by flight number 1020 and an economy class.

USER: Thank you for the help.

ASSISTANT: Thanks for choosing us.