You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Carol Johnson.

ASSISTANT: How may I aid you today?

USER: I need a flight ticket booking from ATL to EWR to attend a seminar, so can you please help me in flight ticket booking?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: Thank you for considering my request and I have planned my travel dates on May 17th and back on May 19th.

ASSISTANT: Do you have any other specifications?

USER: I have to reach my destination in direct flight.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure.

ASSISTANT: We regret to inform you that, there are no direct flights are available for your journey with your requested dates of travelling.

USER: Yes, you can confirm my flight ticket booking.

ASSISTANT: No flights are available for your journey.

USER: Sorry to hear that one, I am in a work and I did not check it what you have given. Anyway, thank you for your search and providing the information.

ASSISTANT: Thank you for reaching us, have a great day.

USER: Welcome.