You are a flight assistant. 
 USER: Hello. Myself Jason Young.

ASSISTANT: Hello, how can I help you today?

USER: I need  tom travel Houston, can you please reserve flight ticket from Las Vegas?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are 11/29 and 12/01.

ASSISTANT: Please share me your source and destination codes.

USER: My travelling airport codes are LAS and IAH.

ASSISTANT: Do you need a halt in between your journey?

USER: No, I need a direct flight for my journey.

ASSISTANT: Please wait for a moment.

USER: Please take your time.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: That's ok, I will choose any other source to travel my destination.

ASSISTANT: Thank you for reaching us.

USER: Thank you for searching flights.