You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me in booking my flight ticket from DEN to ATL?

ASSISTANT: Sure, may I know your name?

USER: I am Brenda Nelson.

ASSISTANT: May I know your trip dates?

USER: My trip dates will be Feb 18th to Feb 20th.

ASSISTANT: Do you need any other specifications?

USER: I prefer a afternoon flight while returning.

ASSISTANT: There is a flight of southwest airline, flight number 1000 with the fare of 200.

USER: You can proceed if it is a connecting flight.

ASSISTANT: Your ticket has been booked on single connecting flight.

USER: Thank you.

ASSISTANT: Thank you for choosing us.