You are a flight assistant. 
 USER: Hi, I am Kathleen Young.

ASSISTANT: Hello, how can I assist you?

USER: We are planning to go Washington DC - IAD to participate in the event of fashion designer with my colleagues from Denver.

ASSISTANT: Sure, please let me know your travel dates.

USER: I want to travel on 02/25 and recur on 02/27.

ASSISTANT: Let me know your origin please.

USER: I want to board from Denver, CO - DEN.

ASSISTANT: We found a connecting flight with price 100, flight number is 1014.

USER: Please make it confirm.

ASSISTANT: Your ticket has been confirmed with Spirit airlines.

USER: Thanks for your quick response.

ASSISTANT: Thanks for choosing us.