You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Eric Hernandez. I would like to book a ticket from HOU to LAS, can you please help me out?

ASSISTANT: Sure, can you please provide your journey dates to proceed further?

USER: I am travelling on these dates 08/22 and 08/24.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Eric Hernandez, there are no flight services available on this route on your provided dates.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for utilising our service.