You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to travel from IAD to ATL as a business trip.

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My journey dates are 02/02 and 02/04.

ASSISTANT: Do you have any specifications about flight connections?

USER: I need only direct flight.

ASSISTANT: Do you have any preferences about class?

USER: I am comfortable with any class.

ASSISTANT: Please mention your name.

USER: Janet Allen here.

ASSISTANT: There are no flights found under your preferable details.

USER: No problem, Thanks for the information.

ASSISTANT: Welcome, have a great day.