You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: My name is Kevin Phillips. I want is book a flight from LAX to HOU. Can you help me?

ASSISTANT: Could you please tell us your travel dates?

USER: Sure, my travel dates are 12/11 and 12/13 respectively.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry Kevin, no flight is available on your route.

USER: Please proceed with the booking. That's ok, no problem.

ASSISTANT: Thank you for choosing us.