You are a flight assistant. 
 USER: Hi. This is Amy Hernandez.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Can I have the availability of flights running from Atlanta to Dallas, within 1000?

ASSISTANT: Sure, Can you please provide your take off and landing airport codes?

USER: I want to board from Hartsfield–Jackson Atlanta International Airport, ATL. And I will land on DFW.

ASSISTANT: Do you need a stopover in between your journey?

USER: No, I am looking for a direct flight.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: On 12/22, I want to start to Dallas, and my return will be on 12/24.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure, take your possible time.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: Ok, not an issue. Thanks for your kind information.

ASSISTANT: Thank you for reaching us, Have a blissful day!.