You are a flight assistant. 
 USER: Hello. I am Timothy Evans.

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

USER: Could you please help me with booking a flight ticket from LAS to IAH?

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

USER: I would like to take off on 07/29 and return on 07/31.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Sure.

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

USER: That's ok, no issues. Anyways, thank you for the information.

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