You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to attend my business meeting, so please book my ticket from LGA to DCA.

ASSISTANT: Can I know your travelling dates?

USER: My itinerary dates are May 21 and May 23.

ASSISTANT: Is there any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any class preference?

USER: I prefer to travel in business class.

ASSISTANT: Let me know your departure and return timing.

USER: I am comfortable to travel at any time.

ASSISTANT: Found ticket with American airlines for price 500.

USER: Book my ticket.

ASSISTANT: Can I know your name?

USER: Joseph Miller here.

ASSISTANT: Your ticket is booked in business class having flight number 1006.

USER: Thank you.

ASSISTANT: Thank you.