You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please book a ticket from IAD to PHL? As I need to attend a conference.

ASSISTANT: Sure, to book a ticket can I know your planned trip dates?

USER: Sure, my planned departure and return travel dates are 14th and 16th of Dec.

ASSISTANT: Do you have any other requirements?

USER: My maximum connection has to be 1.

ASSISTANT: May I know your name please?

USER: My name is Brian Taylor.

ASSISTANT: There is a flight found with an United airlines of flight 1012 in an economy class. Would you like me to proceed?

USER: That's fine, you can proceed for booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you so much.

ASSISTANT: Thank you.