You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Please book me a flight ticket from JFK to PHX to meet my family.

ASSISTANT: Sure, please share me your trip dates.

USER: I have planned to travel on Sept 20th and return on Sept 22nd.

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

USER: Michael Miller.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I prefer connecting flight.

ASSISTANT: Is there any time concern for you?

USER: I am ok with any time but I prefer economy class.

ASSISTANT: We found a Spirit airline and 1001 is flight number with a fare of 100. Shall I proceed?

USER: Ok, please book this ticket.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.