You are a flight assistant. 
 USER: Hi, Brian Edwards here.

ASSISTANT: Hello, how can I help you?

USER: My friends planned our get together party in Charlotte, NC - CLT, so I need to book a flight ticket. Can you help me to book a ticket under the price of 5000?

ASSISTANT: Sure, please share me your travel dates.

USER: Sure, my travelling dates are on 01/27 to 01/29. And my source is Denver, CO - DEN.

ASSISTANT: We found a connecting flight with the price 100, flight number 1001, Shall I proceed for booking?

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been confirmed with UA airline.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.