You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning for a trip with my family to DFW, can you help me with booking ticket from LGA?

ASSISTANT: Sure, can I know your travelling dates?

USER: Ok, my travel dates are from Mar 25 to 27.

ASSISTANT: On which name should I reserve the flight ticket?

USER: Sure, I am Ryan Perez.

ASSISTANT: Do you have any connection limit?

USER: I would like to return in the morning time with single connection.

ASSISTANT: Do you have any other specifications?

USER: I need a business class.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for reaching us.