You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to visit at CLT, to meet my best friend, can you help me to book a flight ticket from EWR?

ASSISTANT: Sure, may I know your trip dates?

USER: I want to take off on 15 Dec and return on 17 Dec.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Any other requirements to be met?

USER: I need a connecting flight.

ASSISTANT: Do you have any particular time for departing and returning?

USER: No.

ASSISTANT: May I know your name?

USER: Andrew Lopez.

ASSISTANT: United airlines flight- 1005 of price 100 with connection in economy class matches your given details, shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, your flight ticket has been booked.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us.