You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be a help for you?

USER: I am William King want to meet my friend at New York, can you book a ticket within the fare of 500?

ASSISTANT: Sure, can you please share your source and destination airport codes?

USER: Sure, I want to fly from HOU to EWR.

ASSISTANT: May I know on what dates you have planned to travel?

USER: Ok, my planned dates are 05/11 and 05/13.

ASSISTANT: There is a direct flight available on your requested dates from UA airlines. Shall I proceed to book the ticket?

USER: Can you please check for the connected flight?

ASSISTANT: Sorry, there is no connected flight available on your requested dates.

USER: That's fine. Thank you.

ASSISTANT: You are most welcome.