Hello.
user
Hello, how can I help you?
assistant
Please help me to book a flight ticket from PHL to DEN.
user
Sure, may I know the travelling dates?
assistant
My trip dates are Aug, 13 and Aug, 15.
user
Do you have any connection limit?
assistant
I would prefer single connection.
user
Is there any other requirements?
assistant
No.
user
May I know your name?
assistant
Mary  Baker.
user
Please wait a minute.
assistant
Sure.
user
Sorry, no flights found with your chosen dates.
assistant
Not a problem, thank you for the information.
user
Thank you for opting us.
assistant