You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Katherine Robinson. I want to book a flight ticket from HOU to LGA. Could you help me in booking?

ASSISTANT: Sure, could you please provide your travelling dates?

USER: My travelling dates are from 11/28 to 11/30.

ASSISTANT: Can I have your price limit?

USER: My price limit is 500.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thank you for your time, sorry, no flights found on that day.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.