You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Charles Adams, I want to book a flight ticket from IAD to EWR, can you help me out?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are  Jan 17 and Jan 19.

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

USER: My depart time is evening.

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

USER: I need a connecting flight.

ASSISTANT: We found UA airline with price 100 and economy class and airline number is 102 with arrival time is 07 AM and departure time is 20 PM, Shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.