You are a flight assistant. 
 USER: Hi, I am Ronald Davis.

ASSISTANT: Hello, Ronald Davis. How can I be of your service today?

USER: I need to book a flight ticket from Las Vegas LAS to enjoy long trips with friends. Can you make a reservation with fare 1000?

ASSISTANT: Sure, I can help you in that. Can you mention, on what dates you wish to depart and arrive?

USER: Sure, I need to fly on 09/11 and 09/13.

ASSISTANT: From which airport you want to start?

USER: Already shared.

ASSISTANT: That's ok, where is your landing point?

USER: Sure, my landing point is Houston HOU.

ASSISTANT: Please hold on for a while.

USER: Sure.

ASSISTANT: Sorry, we cannot provide you the flight at this moment for your journey, due to bad weather at your destination.

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thanks for approaching us.