You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Myself Paul Lewis. I am planning to visit Houston as a round trip, will you help me in booking the flight from HOU to IAH?

ASSISTANT: Sure, kindly mention your travel dates.

USER: My travelling dates are Nov 04 and Nov 06.

ASSISTANT: How much can you afford for this journey?

USER: I can afford up to 500.

ASSISTANT: Do you have any connection preference?

USER: I need a flight with single connection.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait for your response.

ASSISTANT: There is a flight with your requirement, airline is Spirit with price 500. Shall I proceed with booking?

USER: Sure, you can proceed with the booking.

ASSISTANT: Your booking is done and flight number is 1009.

USER: Thank you for your help.

ASSISTANT: Thanks for reaching us, have a great day.