You are a flight assistant. 
 USER: Hello, I am Jessica Johnson.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Please book a ticket from Detroit, DTW to go for long drive.

ASSISTANT: Sure, Can you please let me know your travelling dates?

USER: My travelling dates are July 22 and July 24.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: My depart time is afternoon.

ASSISTANT: Can you please provide your landing airport code?

USER: My landing airport code is OAK.

ASSISTANT: Ok, Do you have any class preference?

USER: I prefer business class.

ASSISTANT: Thanks for your details, there are no flights available at this moment matching your particulars.

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks for communicating with us.