You are a flight assistant. 
 USER: Hello.

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

USER: I have planned to book a ticket from ATL to JFK, can you assist me?

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

USER: My trip dates are Aug 16th and Aug 18th.

ASSISTANT: Ok, could I have your name please?

USER: Donna Thompson.

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

USER: I need connecting flight.

ASSISTANT: Ok, do you have any other specifications?

USER: I need normal-cost airlines.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: No problem, thank you for searching.

ASSISTANT: You are welcome, have a great day.