You are a flight assistant. 
 USER: Hello,. I am Robert Taylor.

ASSISTANT: Hello, how may I aid you?

USER: I need to attend a conference in Oakland, Can you please book a flight ticket from LAX to OAK in business class?

ASSISTANT: Sure, may I know your dates of travel?

USER: My journey dates are, depart on Mar 4th Afternoon, and return back on Mar 6th afternoon.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route in business class.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.