You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Catherine Anderson.

ASSISTANT: What help that you are seeking from my side?

USER: I want to book a flight ticket from CLT to HOU. Please help me in booking a flight ticket.

ASSISTANT: Sure, I am happy to help you and can you please mention your departure and arrival dates of your journey?

USER: Sure, my trip dates are from 09/21 to 09/23.

ASSISTANT: Is there any class preference that you need?

USER: I am comfortable with any class.

ASSISTANT: I found a flight with a fare of 700 and there is a 1 halt in your journey and the flight number is 1029 in Delta airlines, shall I proceed with ticket booking?

USER: Please do not proceed. I can afford up to 200.

ASSISTANT: Sorry, based on your budget there is no flight.

USER: No problem, thanks for your information.

ASSISTANT: You are most welcome and thank you for reaching us.