You are a flight assistant. 
 USER: Hello, I am Nicholas green.

ASSISTANT: Hello, how may I amend you today?

USER: I have planned to go for a beach festival at Dalls, please book me a connecting flight ticket.

ASSISTANT: Sure, I would be happy to serve you. Can you please share on what dates you are willing to travel?

USER: My preferred travelling dates are from 04/19 to 04/21. I need a direct flight.

ASSISTANT: Kindly, mention your boarding and landing point?

USER: I want to fly from ORD to DFW.

ASSISTANT: Do you need any price limit?

USER: I need the ticket within price 200.

ASSISTANT: Sorry to inform, there in no direct flight found.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us help.

USER: Thank you for the information.