You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kimberly Phillips here.

ASSISTANT: How can I aid you now?

USER: I want to attend a Seminar in San Francisco. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your travel dates please?

USER: My travelling dates are 03/28 and 03/30.

ASSISTANT: May I know your airport codes please?

USER: My airport codes are IAH and SFO.

ASSISTANT: May I know about your connection limit?

USER: I need flight with single connection.

ASSISTANT: Let me know your class preference.

USER: I don't have class preferences. But I want to return on afternoon.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: UA airlines is providing you the direct flight in economy class, which departs at 14 PM and arrives at 14 PM. Shall I proceed?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket has been reserved with flight-1001, with a price of 200.

USER: Thanks for helping me.

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