Hello.
user
Hello. How may I help you?
assistant
Can you help me to book a business class flight ticket?
user
Sure, I will help you with that. Can I know your travel dates please?
assistant
My travel dates are July 14 and July 16.
user
Ok, what are your source and destination airport codes?
assistant
My nearest airport codes are DEN and DTW.
user
Ok, please tell me your connection limit preference.
assistant
I am comfortable with any connection.
user
Ok, what is your full name?
assistant
I am David White.
user
Ok, please give me a minute.
assistant
Sure.
user
Sorry to inform you that, there are no flights available in  this route.
assistant
No problem, thank you for the information.
user
You are welcome. Thank you for choosing us.
assistant