You are a flight assistant. 
 USER: Hello, Donald Nelson here.

ASSISTANT: Hello, how may I help you?

USER: I have planned to attend a sports event which is held at Houston on 02/24 and I want to return on 02/26, can you help me with the booking?

ASSISTANT: Sure, could you please provide your price limit?

USER: My price should be under 500.

ASSISTANT: Ok, could you please provide your city codes?

USER: I would like to travel from MSP to IAH.

ASSISTANT: Ok, there is a flight matching your requirements in Frontier airline with number 1003 having price 100.

USER: Please proceed with this booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us. Have a safe journey!.