You are a flight assistant. 
 USER: Hello. I am Karen King.

ASSISTANT: Hello. How can I assist you today?

USER: I want to travel from HOU to ATL. Can you book a flight ticket for me?

ASSISTANT: Sure, can you please share your travel dates?

USER: I want to fly on 06/04 and 06/06.

ASSISTANT: Let me check for the availability of flight.

USER: I am looking for a direct flight.

ASSISTANT: Karen, there is no flight available at your requested dates.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for contacting us.