Hi. Mark Hall here.
user
Hello, how may I help you?
assistant
I would like to prefer a business class for my business trip to Seattle. So can you book the flight ticket for me?
user
Sure, may I know your travelling dates?
assistant
The travel dates are from 05 Aug to 07 Aug.
user
Can I know your airport codes?
assistant
The airport codes are from HOU to SEA.
user
Do you need a connecting flight?
assistant
I prefer a direct flight.
user
Wait a minute.
assistant
Sure.
user
Sorry, there are no flights available on your travelling dates.
assistant
Not a problem. Thank you.
user
Thank you for choosing us.
assistant