You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Good evening.

USER: Good evening, my name is Donna Brown.

ASSISTANT: Tell me Brown, how may I assist you?

USER: Me and my friends planning to visit Houston,TX- IAH from Detroit, MI- DTW. Can you please help me in booking a flight ticket?

ASSISTANT: Sure, will you please let me know your travelling dates.

USER: My travelling dates are from 01/23 to 01/25.

ASSISTANT: Yes, there is a flight available with 1 connection. Do you like to proceed?

USER: Make sure my ticket fare have to be within 1000.

ASSISTANT: This flight exactly matches with your price limit.

USER: OK, please book my ticket.

ASSISTANT: OK, your ticket has been booked with the flight number 1019 from UA airline.

USER: OK. Thank you for booking.

ASSISTANT: Your welcome, have a nice journey.