You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Please assist me to reserve a plane ticket from LAS to ATL.

ASSISTANT: Sure, I will help you out in booking the ticket. May I know your travelling dates please?

USER: Thank you. The planned journey dates are Apr 16 and Apr 18.

ASSISTANT: Can I know your name please?

USER: I am Susan Parker.

ASSISTANT: Do you need any specifications?

USER: I prefer to travel in an economy class flight.

ASSISTANT: Can I know your connection limit?

USER: The maximum connection limit should be at least one.

ASSISTANT: Sorry, there are no flights found.

USER: It's ok, not a problem with that. Anyways thank you for your time.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.