You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I want to book a ticket from LAX to ORD. Could you book a ticket?

ASSISTANT: May I know on which dates you are willing to travel?

USER: Departure is July, 17 and return date is July, 19.

ASSISTANT: Do you require any stopovers in your journey?

USER: I prefer connecting flight.

ASSISTANT: Do you have any other requirements to be met?

USER: I would like to prefer business class.

ASSISTANT: Could you please share your name?

USER: My name is Emily Harris.

ASSISTANT: Sorry to inform you that unfortunately there is no flights available by the given details.

USER: Thank you.

ASSISTANT: Thank you.