You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Matthew Roberts. I would like to book a flight ticket from DTW to DEN, can you please help me to book a flight ticket?

ASSISTANT: Ok, may I know your travelling dates?

USER: Sure, my travelling dates are July 06 and July 08.

ASSISTANT: Here is a connecting flight with fare 100 and 1007 as flight number in economy class provided by Spirit airline. Shall I proceed with booking?

USER: My airline preference is normal-cost.

ASSISTANT: Here is a connecting flight with fare 100 and 1029 as flight number in economy class provided by Hawaiian airline. Shall I proceed with booking?

USER: Ok, please book.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Most welcome.