You are a flight assistant. 
 USER: Hello. I am Cynthia Martin.

ASSISTANT: Hello, what kind of help are you expecting from our side?

USER: I want to visit High Roller located in Las Vegas, NV - LAS. Can you help me in booking flight ticket from HOU?

ASSISTANT: Sure, that is what I am here.

USER: Thank you.

ASSISTANT: Do you need any specifications in connection?

USER: I need a direct flight.

ASSISTANT: Ok, may I know on which dates would you like to start and return?

USER: I want to start my journey on 07/22 and return on 07/24.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, we did not find any flights on your preferable dates of journey.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thank you for availing us.