You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Dennis Lopez. Can you help me to book a flight ticket from CLT to EWR?

ASSISTANT: Sure, can I know your travelling dates?

USER: My preferable journey dates are Oct 21 and Oct 23.

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

USER: I would like to depart in the evening time.

ASSISTANT: Which class do you prefer?

USER: I am comfortable with any class.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I prefer connecting flight for this trip.

ASSISTANT: We found Southwest airline with price 200 and economy class and airline number is 1004 with arrival time is 15 PM and departure time is 21 PM, Shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.