You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to attend a Tennis competition in Las Vegas LAS from HOU. Can you make a reservation for me?

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

USER: Ok, my itinerary dates are on July 27 and return July 29.

ASSISTANT: May I know your connection limit?

USER: Yes, I need a single connecting flight.

ASSISTANT: Is there any airline preference for you?

USER: Yes, I need a normal cost flight to travel.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Your good name please.

USER: Yes, I am Ryan Lee.

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

USER: Ok, not an problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.