Hello.
user
Hello.
assistant
I am Stephen Taylor.
user
How may I help you?
assistant
I want to book a flight ticket from EWR to HOU. Could you help me in booking?
user
Sure, please provide  your trip dates.
assistant
My travelling dates are from Jan 09-11.
user
Ok, can you please tell me if you have any other requirements?
assistant
I need direct flight and My return time should be in the evening.
user
Ok, please wait a minute. Sorry, we regret to inform you that there is no flight available as per your request.
assistant
That's ok, no problem. Thank you.
user
Most welcome.
assistant