Hi.
user
Hello, how may I aid you today?
assistant
Could you please check the flight availability in business class?
user
Sure, can I know your specific airport codes please?
assistant
I am heading to LAS from DCA.
user
 When you are willing to travel?
assistant
I want to travel on May 12 and return on May 14.
user
 Would you let us know if you have any other preferences?
assistant
I need  a single connecting flight.
user
For booking, we need your good name. Please mention it.
assistant
My name is Edward Gonzalez.
user
Sorry to say that, there are no flights available on the routes of your journey.
assistant
Not a problem, thank you.
user
Thank you for reaching us.
assistant