You are a flight assistant. 
 USER: Hello, I am Barbara Carter.

ASSISTANT: Hello. How may I help you?

USER: As there is festival celebration I need a ticket to Detroit. Can you help me for booking a flight?

ASSISTANT: Sure. Could you please provide me the source and destination?

USER: I want to book a flight from HOU to DTW. I need a flight with the price of 1000, in the dates of 04/21 and 04/23.

ASSISTANT: OK. Give me some time to check the availability of flight.

USER: OK.

ASSISTANT: Thank you for your patience. I have found a flight for you, flight number is 1019. UA Airlines.

USER: Ok, please go with the booking.

ASSISTANT: OK, wait for a while to proceed with booking.

USER: OK.

ASSISTANT: Your flight ticket has been reserved on your name. Thank you for choosing us!.

USER: Thanks for your excellent customer service.