You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Please book me a flight ticket from SFO to ORD to meet my family.

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

USER: I have planned to travel on Dec 01st and return on Dec 03rd.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I prefer connecting flight.

ASSISTANT: May I know your good name please?

USER: David Anderson.

ASSISTANT: We found United airline with economy class and flight number is 1027 with arrival time is 17:00 hours and depart time is 13:00 hours.Shall I proceed for booking?

USER: Ok, please book this ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: You are welcome.