You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I would like to book a ticket from DCA to PHL, can you please help me with that?

ASSISTANT: Sure, can you share your trip dates?

USER: The travel dates are from 12/05 to 12/07.

ASSISTANT: Do you have any preferences?

USER: I need a flight with 1 connection limit.

ASSISTANT: May I know your name?

USER: Matthew Nelson here.

ASSISTANT: There is a connecting flight with number 1004 in airline UA, the fare is 100 in economy class. Can I book it?

USER: Please proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.