You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want to book a flight ticket from DFW to OAK to meet my friend.

ASSISTANT: May I know your travel dates?

USER: Sure, my travelling dates are Apr 15 and Apr 17.

ASSISTANT: Do you have any connecting preferences?

USER: I prefer to travel in a connecting flight,.

ASSISTANT: May I know your name please?

USER: I am Margaret Lewis.

ASSISTANT: Is there any other concern?

USER: No.

ASSISTANT: United Airlines providing the connecting flight and the fare of 200, shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Your reservation is confirmed for the flight 1005.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.