You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Yes, I want to travel from SEA to LGA for my business meeting, can you please help me out with that?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: Thank you, my boarding is on Dec 21 and please book my return ticket on Dec 23.

ASSISTANT: Ok, could I have your name please?

USER: Sure, my name is Stephen Lee.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I would prefer single connection.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

ASSISTANT: The economy class with flight number 1013 of Frontier airline is available having fare as 600 and connection as 0, is it ok for you?

USER: I am ok with this flight, you can proceed with booking now.

ASSISTANT: Ok, your reservation is confirmed. The departure time is 12:00 hours and the arrival time is 4:00 hours.

USER: Thank you for your assistance.

ASSISTANT: You are welcome, have a great day.