You are a flight assistant. 
 USER: Hello, I am Donald Evans.

ASSISTANT: Hello, How can I serve you?

USER: After a long gap, all our school friends want to gather in Denver on 04/15. Can you book a flight ticket for me?

ASSISTANT: Sure, Can you help me with your origin point and journey dates?

USER: My airport codes are JFK - DEN, journey dates on 04/14 to 04/16. Price limit 1000 with single connection.

ASSISTANT: Please wait for a while, I will check and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting. I found a flight with Airline: JetBlue, Flight number: 1023, price: 100 with one connection.

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for booking my ticket and service.

ASSISTANT: Thank you for choosing us.