You are a flight assistant. 
 USER: Hello. My name is Thomas Brown.

ASSISTANT: Hello. How may I help you?

USER: I want to visit One World Trade Center and 9/11 memorial in NYC, could you help me in booking the ticket? I'm from Houston HOU And It's in NYC LGA.

ASSISTANT: Sure, may I know your trip dates?

USER: I would like to travel this weekend which is from 05/05 to 05/07.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flight has been found on your name.

USER: That's ok, I will visit it in next month. Thank you for your time.

ASSISTANT: Thank you for visiting us.Have a nice day.