You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Steven Nelson here.

ASSISTANT: How may I help you today?

USER: I want to book a flight on the route from SFO to LAS, can you help me please?

ASSISTANT: Sure, I am here to help you.

USER: I need to travel on the dates from 09/24 to 09/26. I only need a direct flight for my journey.

ASSISTANT: Please wait for a minute.

USER: Sure, please check for the flights within the price of 5000.

ASSISTANT: Sorry, I could not find any flight with your travel dates.

USER: Oh! That's fine. Anyways, thank you for checking.

ASSISTANT: My pleasure.