You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am planning to travel in a direct flight, can you help me in booking?

ASSISTANT: Sure, I can help you. Please provide me your travel dates.

USER: My journey dates are Dec 01 and 03.

ASSISTANT: Ok, please let me know your source and destination airport codes.

USER: My airport codes are IAH and LGA.

ASSISTANT: May I know your preferences?

USER: No I did not have any other requirements.

ASSISTANT: Please help us with your name.

USER: Sure, my name is Scott Hall.

ASSISTANT: Direct flight is available in Southwest airlines and the ticket fare is 100 only. Can I book the ticket for you?

USER: Yes, proceed.

ASSISTANT: Your ticket is booked in economy class with the flight-1022. Have a nice day.

USER: Thank you for your help in booking.

ASSISTANT: You are most welcome.