You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you?

USER: I am Ronald King. Please book a flight ticket on dates 04/17 and 04/19.

ASSISTANT: Sure, can you please share your airport codes?

USER: My airport codes are DEN and MSP.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, there is an Frontier airline with flight number 1005 going on your way and the fare is 100. Shall I go ahead?

USER: Yes, please.

ASSISTANT: Your booking has been done.

USER: Thank you.

ASSISTANT: Thank you for opting us.