You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Paul Davis. I would like to book a ticket from IAH to LAS, can you please help me out?

ASSISTANT: Ok, can I have your journey dates to get a flight for you?

USER: I am travelling on these dates March 25th and 27th.

ASSISTANT: Do you have any other requirements?

USER: I need a direct flight.

ASSISTANT: Sorry, there is no flight for you on your route.

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

ASSISTANT: Thanks for contacting us.