You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Karen Walker.

ASSISTANT: How may I assist you?

USER: I would like to book a ticket from LGA to ATL, can you please help me out?

ASSISTANT: Sure, I am here  help you out. May I know your travelling dates please?

USER: I am travelling on these dates AUG 13th and 15th.

ASSISTANT: In which class, you want me to book your flight ticket?

USER: I prefer economy class.

ASSISTANT:  Do you prefer a lay by in between your journey?

USER: I need a direct flight.

ASSISTANT: Karen Walker, there are no direct flights available in your route.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us.