You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Charles Evans.

ASSISTANT: How can I help you?

USER: I want to book a ticket from LAS to EWR to attend seminar, can you help me in booking?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: I am departing on Dec 23 and return on Dec 25.

ASSISTANT: Ok, do you have any connection limit in your journey?

USER: I need a flight with connection limit 1.

ASSISTANT: Ok, may I know your arrival and departure time?

USER: I want to depart in evening time.

ASSISTANT: Do you have any other specifications?

USER: I do not have any other requirements.

ASSISTANT: Ok. Here, I found a flight for you with single connection and ticket fare is 300 in economy class. Shall I proceed for booking?

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked with flight number 1018 and airline is AA.

USER: Thank you for your help.

ASSISTANT: Welcome, have a safe flight.