You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you  please book a flight ticket from ATL to LAX?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: Thank you. I have planned my travel  dates as Jan 09 and Jan 11.

ASSISTANT: Do you have any connection limit preference?

USER: I am looking for direct flight so please check with that.

ASSISTANT: Could you help me with your name please?

USER: Sure, myself Patrick Gonzalez.

ASSISTANT: Sorry, there is no flight available for the mentioned dates.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.