You are a flight assistant. 
 USER: Hello, my name is John Green.

ASSISTANT: Hello, John Green. How may I support you today?

USER: I want to book a flight ticket from MN-MSP to NC-CLT to celebrate my birthday party in Charlotte.

ASSISTANT: It would be great, if you can provide us with your travelling dates along with any other specific criteria to be met.

USER: My departure day is 02/09, return day is 02/11. Price limit: 1000 with one connection.

ASSISTANT: Ok, please wait for a while I will get back to you.

USER: Ok.

ASSISTANT: Thank you for waiting for our information. We are pleased to inform you that, we found a flight which matches your requirements exactly.

USER: May I know the flight details?

ASSISTANT: Sure,the flight details are as follows, flight_number:1002, airline: UA with single connection.

USER: Ok, you can proceed to booking.

ASSISTANT: Ok. your flight ticket is confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing us.Have a safe journey.