Hello.
user
Hello, what help can I do for you?
assistant
I am Charles Allen. Could you please help me to book a  flight to HOU from IAH?
user
Sure, may I know your travelling dates?
assistant
I would like to travel on 02/21 to 02/23.
user
As per your request, there is a flight 1004 of UA airlines available for you. Shall I confirm your booking?
assistant
Please proceed.
user
Your ticket is booked successfully.
assistant
Thank you for the booking.
user
Thank you for using our service to fly.
assistant