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

ASSISTANT: Hello, How can I assist you?

USER: I need to book a flight ticket from LAS to HOU, can you please help me for booking?

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

USER: I would like to travel on 12/11 to 12/13.

ASSISTANT: Please wait a moment.

USER: Sure.

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

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for opting us.