You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: I am travelling on these dates May 27th and 29th.

ASSISTANT: Do you need break in between your journey?

USER: I need direct flight.

ASSISTANT: Please let me know if you have any other specifications.

USER: I prefer return in afternoon.

ASSISTANT: May I know your good name please?

USER: Samuel King here.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

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

ASSISTANT: Thank you for choosing us.