You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I need to book a ticket from EWR to ORD. Could you book a ticket?

ASSISTANT: Sure, may I know your travel dates?

USER: Travel dates are Jan, 10 and Jan, 12.

ASSISTANT: Do you have any class preferences?

USER: I prefer business class ticket.

ASSISTANT: Do you need any break in between your journey?

USER: I need connecting flight.

ASSISTANT: Do you have any other preferences?

USER: I would like to depart in the afternoon.

ASSISTANT: May I know your name?

USER: My name is Andrew Adams.

ASSISTANT: Sorry, we did not find any flights for you.

USER: Thank you.