You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please book me a flight ticket from ATL to DEN to meet my family?

ASSISTANT: Sure, please share me your trip dates.

USER: I have planned to travel on Oct 01st and return on Oct 03rd.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I like connecting flight.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: Mary Miller.

ASSISTANT: May I know your class preferences?

USER: I am ok with any class.

ASSISTANT: We found a Spirit airline and 1004 is flight number with a fare of 100. Shall I proceed?

USER: Ok, please book it.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you.

ASSISTANT: Thank you for availing us.