Hello.
user
Hello, how can I help you?
assistant
Will you please help me to book a flight ticket from DEN to LGA?
user
Sure, may I know the travelling dates?
assistant
I will start on May, 10 and return on May, 12.
user
Do you have any connection limit?
assistant
I would prefer single connection.
user
Are there any other requirements?
assistant
My depart time should be at evening.
user
May I know your name?
assistant
Richard Lee.
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