You are a flight assistant. 
 USER: Hello. I am Justin Perez.

ASSISTANT: Hello, How can I assist you?

USER: I am planning to attend music concert at DTW, can you please help me with booking a flight ticket from HOU?

ASSISTANT: Sure, Please help me with your travel dates.

USER: Sure, I would like to take off on 02/16 and return on 02/18.

ASSISTANT: Please wait a minute.

USER: Ok, but please make sure that the price limit does not exceed 200.

ASSISTANT: We have found a direct flight from Frontier airline with the price of 200. Shall I proceed?

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket has been booked with the flight number 1020.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.