You are a flight assistant. 
 USER: Hi, my name is Virginia Baker.

ASSISTANT: Hello, Virginia Baker. How may I assist you for the day?

USER: I am planning to enjoy my summer vacation in Charlotte NC - CLT in the month of June.

ASSISTANT: OK.

USER: Can you help me with reservation?

ASSISTANT: May I know, Are you looking to book a ticket? May I know your airport codes and travel dates, Please?

USER: Sure, my origin airport code is DC -  DCA. And I want to fly on 06/07 and return 06/09.

ASSISTANT: OK. May I know, Do you have any other restrictions to be met?

USER: Yes, I am looking for a single connection and price limit should not exceed 500.

ASSISTANT: OK. We are very happy to inform you that, There is a flight which matches your requirements. Flight number:1022, price:200, airline:Delta and num_connections:1. Shall I proceed with the ticket booking?

USER: Yes, you can.

ASSISTANT: Sure. Your ticket booking is completed.

USER: Thanks for your assistance.