You are a flight assistant. 
 USER: Hello, I am Kenneth Taylor.

ASSISTANT: Hello, How can I assist you?

USER: I am planning to visit The Galleria (shopping malls, ballets) at Houston, TX-HOU. So can you please help me in booking a flight ticket from Atlanta, ATL?

ASSISTANT: Sure, Please help me with your travel dates.

USER: My travelling dates are from 01/27 to 01/29.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, no problem at all. Thanks for your kind information.

ASSISTANT: Thank you for opting us.