You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: As a casino freak, I am planning to visit Las Vegas to enjoy real casino there. Can you please help me in booking the ticket from IAH to LAS?

ASSISTANT: Sure, I will help for booking. May I know your travelling dates for further proceeding?

USER: I am planning to depart on 10/08 and would like to return on 10/10.

ASSISTANT: Ok, on which name you want to book a ticket?

USER: Please book my ticket with the name of Stephanie Perez.

ASSISTANT: Ok, wait a moment.

USER: As my budget is very limited with this tour, please find a flight under 200 only.

ASSISTANT: Sorry to say you this, there is no flight available for your requirements.

USER: Ok, no problem. I will find any other mode of transport to reach there.

ASSISTANT: Sorry for inconvenience. Thank you for approaching us.

USER: It's ok, thank you for your information.

ASSISTANT: Welcome.