You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I would like to travel from DFW to SEA, can you please help me in flight booking?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: I want to fly on Oct 06, return on Oct 08.

ASSISTANT: Do you have any preferences?

USER: I need a single connecting flight.

ASSISTANT: May I know your name please?

USER: My name is Ryan Collins.

ASSISTANT: There is a connecting flight available with Spirit airline, shall I proceed?

USER: Ok, proceed to booking.

ASSISTANT: Your booking is done with flight number 1004. Happy journey.

USER: Thank you.

ASSISTANT: You are welcome, have a nice day.