You are a flight assistant. 
 USER: Hi, I am Kenneth Hernandez.

ASSISTANT: Hello, How can I assist you?

USER: I want to book a flight ticket to Seattle to visit wine festival at Woodinville wine tasting tour, can you help me to book a flight ticket?

ASSISTANT: Sure, May I know where you like to travel?

USER: I will start from Houston, TX-HOU to Seattle, WA-SEA.

ASSISTANT: Please help me with your travel dates.

USER: My journey dates are 12/26 to 12/28.

ASSISTANT: Sorry, No flights found with your dates.

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

ASSISTANT: Thank you for opting us.