You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am a singer, I have to participate in a contest. Please book my ticket from DCA to ORD.

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My itinerary dates are Apr 24 and Apr 26.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any class preference?

USER: I prefer to travel in business class.

ASSISTANT: May I know your good name please?

USER: Kimberly White here.

ASSISTANT: Do you have any particular time for departing and returning?

USER: No.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: No problem, I will find an alternative way to travel.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.