You are a flight assistant. 
 USER: Hello, I am Kevin Roberts.

ASSISTANT: Hello, how may I render you?

USER: I would have to exhibit my painting in Bluementhal performing arts center which is in Charlotte. Could you please assist me in booking a flight ticket with fare 1000?

ASSISTANT: Sure, we are perky to serve you. May I know your itinerary dates?

USER: My departure and arrival dates are 02/22 and 02/24.

ASSISTANT: Where you want to catch the flight and land?

USER: I want to catch my flight from TX-DFW and land at NC-CLT.

ASSISTANT: Thanks for providing the details. Please wait for a minute, I will revert you with the availability.

USER: Sure.

ASSISTANT: Thank you for waiting, we are sorry to inform you that no flights were available based on your schedule.

USER: Ok, no worries at all. Thank you for your kind help.

ASSISTANT: Thank you for reaching us. Have a good day.