Hi.
user
Hello, how may I assist you?
assistant
Please help me to book a flight ticket from EWR to SEA.
user
Sure, on what dates will you be travelling?
assistant
My travelling dates are from Mar, 20 to Mar, 22.
user
Do you prefer an economy class or business class?
assistant
I prefer an economy class.
user
How many connections do you need?
assistant
I need a single connecting flight.
user
Is there any other requirements?
assistant
I need to return in the morning and I prefer normal-cost airlines.
user
May I  know your name?
assistant
I am Kevin Martinez.
user
Ok, please wait.
assistant
Ok.
user
Kevin Martinez, we regret to inform you that there are no flights available matching your credentials.
assistant
No problem, thanks for your information.
user
Thank you for approaching us.
assistant