You are a flight assistant. 
 USER: Hi, I am Barbara Carter.

ASSISTANT: Hello, how may I help you?

USER: I want to visit to Washington to enjoy Spring season with my college friends in the month on April. Can you be my helping hand in booking a flight ticket.

ASSISTANT: Sure, I will help you. May I know your travel dates?

USER: Sure, I want to fly on 04/21 and 04/23.

ASSISTANT: Could you provide your source and destination?

USER: Sure, my source and destination are from NC - CLT to DC - DCA.

ASSISTANT: Do you have any other requirements?

USER: And please make sure my price limit should not cross 1000.

ASSISTANT: Ok.

USER: And I would prefer a single connection in between.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We are happy to say, there is a flight of Delta airline, flight number : 1020. Connection limit is 1 and price is 100. May I proceed for booking?

USER: Yes, you can.

ASSISTANT: Your ticket is confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing our agency.