You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Jacob White, want to travel from LGA to ORD. Please help me in booking my ticket.

ASSISTANT: Sure, can you please share your journey dates?

USER: My travelling dates are from 03/19 to 03/21.

ASSISTANT: Do you have any specifications to be met?

USER: My departing time will be in the evening and my return time will be in the morning.

ASSISTANT: Are you looking for any preferred class?

USER: Yes, I am looking for business class.

ASSISTANT: Ok, please wait a moment.

USER: Make sure, the flight should be with 1 connection.

ASSISTANT: Ok. Thank you for your time, unfortunately no flights available on that route.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for reaching us.