You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you the best today?

USER: I would like to travel from ORD to LGA as a business trip, can you do the reservation?

ASSISTANT: Sure, may I know your connection limit please?

USER: I need direct flight.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My trip dates are 11/29 and 12/01.

ASSISTANT: On what name, do I need to reserve the ticket?

USER: Eric Taylor here.

ASSISTANT: Are there any other specifications?

USER: I am comfortable with economy class.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for contacting us.