You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am Raymond Mitchell. I need to book a flight ticket on 03/28 to 03/30, Can you please help me for booking?

ASSISTANT: Sure, I can help you. How much can you afford for your ticket?

USER: I can pay up to 5000.

ASSISTANT: Can you please let me know your airport codes?

USER: My take off ORD to HOU.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We found an Spirit airline with flight number 1003 and price of 100 available on your route.

USER: Ok, proceed for booking.

ASSISTANT: Your booking has been done.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.