You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am David Collins.

ASSISTANT: How may I assist you?

USER: Can you please make a plane reservation from CLT to IAD?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My travelling dates are Oct 21st and Oct 23rd.

ASSISTANT: May I know your connection limit please?

USER: I need a flight with single connection.

ASSISTANT: Please share if you want to travel in any specific time?

USER: The depart time should be afternoon.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: UA airlines is providing single connection flight for your with the fare of 100 in economy class which departs in 19:00 PM, shall I proceed with the booking?

USER: Please proceed.

ASSISTANT: You ticket is booked with the flight-1020.

USER: Thank you.

ASSISTANT: Thank you for choosing us.