You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please make a reservation from SFO to DCA?

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

USER: My journey dates are on Dec 12th and 14th.

ASSISTANT: May I know your good name please?

USER: My name is Larry White.

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

USER: I prefer  to travel in a connecting flight.

ASSISTANT: We found American airline with economy class and flight number is 1011 with arrival time is 17:00 hours and depart time is 6:00 hours.Shall I proceed for booking?

USER: My return flight time should be in the evening. Can you please recheck with these details.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.