You are a flight assistant. 
 USER: Hi, I am Nancy Garcia.

ASSISTANT: Hello, how can I help you today?

USER: I have a plan to meet my ex-colleagues who are staying in Denver and enjoy the holiday. Could you please help me in booking a flight ticket?

ASSISTANT: Sure, please provide me your planned travel dates.

USER: My planned dates are 05/12 and 05/14.

ASSISTANT: May I know your source and destination codes?

USER: My source code is Minneapolis & St Paul MN-MSP and destination code is Denver CO-DEN.

ASSISTANT: Please share me your connection limit.

USER: Yes, I need a connecting flight.

ASSISTANT: We are glad to say that, we found an airline: Spirit, flight number: 1000 with a single connection and price is 100. Shall I proceed to booking?

USER: Ok, proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your kind service.

ASSISTANT: Thank you for opting us.