You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to attend my friend's wedding at Washington. Can you please book me a flight ticket from LAX to reach DCA?

ASSISTANT: Sure, can I know your travelling dates?

USER: My planned journey dates are from Aug 8 to Aug 10.

ASSISTANT: On which name should I reserve the flight ticket?

USER: You can reserve the ticket on my name Ryan Taylor.

ASSISTANT: Do you have any connection limit?

USER: I need a flight having maximum connection of one.

ASSISTANT: Do you have any other specifications?

USER: I prefer only business class for my journey.

ASSISTANT: We found Frontier airline with price 100 and economy class and airline number is 1011 with arrival time is 10:00 hours and departure time is 1:00 hours, Shall I proceed for booking?

USER: Please, proceed.

ASSISTANT: It is economy class. Shall I confirm?

USER: Do not  proceed, I need only business class.

ASSISTANT: Sorry, there are no flights available on given dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.