You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I am Joseph Collins.

ASSISTANT: Ok.

USER: Will you please confirm my seat from Boston, BOS?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Will you please help me with your travelling dates?

USER: The travelling dates are 03/13 and 03/15.

ASSISTANT: Could you please help me with your destination code?

USER: New York, LGA is the destination place.

ASSISTANT: Do you have any other preferences?

USER: Yes, I need a connecting flight. 500 is the price limit.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry Joseph Collins, there are no flights found on your requested travelling dates.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for choosing us, have a nice day.