You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of help you are looking for?

USER: I am planning to book a ticket from LGA to EWR to attend seminar, can you help me in booking?

ASSISTANT: Sure, when you are planning to make your journey?

USER: I am departing on Sep 26 and return on Sep 28.

ASSISTANT: Is there any class preference?

USER: I need a flight with business class.

ASSISTANT: Please mention your airline preference.

USER: I am looking for a flight which departs in evening with normal-cost airlines.

ASSISTANT: Is there any more specifications?

USER: I need a flight with connection limit 1.

ASSISTANT: May I know your name please?

USER: My name is Larry Thompson.

ASSISTANT: Sorry to inform you that, there are no flights are available matching your journey dates.

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

ASSISTANT: Thank you for choosing our services.