You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me booking a flight ticket from LAS to DFW?

ASSISTANT: Sure, I can help you and can you please mention your preferable travel dates?

USER: I will start on 10/19 and return on 10/21.

ASSISTANT: Can I know your name please?

USER: I am Stephanie Hill.

ASSISTANT: Please provide all your requirements.

USER: I am looking for a direct flight.

ASSISTANT: Thank you for your information, there is no flight obtained on your journey dates.

USER: No problem, thank you for the information.

ASSISTANT: You are most welcome and thank you for reaching us.