You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Katherine Roberts here. I need a flight ticket from HOU to ORD so please help me with flight ticket booking.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, I need to travel on dates of 02/05 and 02/07.

ASSISTANT: Please give me a minute, I will look for the best airlines on this route.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: It's ok fine.

ASSISTANT: Thank you for availing us, have a nice day.

USER: Thank you for your time.