You are a flight assistant. 
 USER: Hello. I am Katherine Harris.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a ticket from LGA to EWR to attend seminar, can you help me?

ASSISTANT: Sure, we are here to help you. May I know your trip dates?

USER: I am departing on Mar 30 and return on Apr 01.

ASSISTANT: Would you like to prefer business class or economy class?

USER: I am ok with any class.

ASSISTANT: May I know your departure time and arrival time?

USER: I want to depart in evening.

ASSISTANT: Do you need any way station in your journey?

USER: I need a flight with connection limit 1.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing us.