You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you right now?

USER: I need to travel to Detroit, can you book ticket from DCA to DTW.

ASSISTANT: I understand your request and will be happy to help you. Certainly, could you please share your departure and arrival day?

USER: My travelling dates are 10/18 and 10/20. Please check for business class ticket.

ASSISTANT: Could you mind be on hold for a moment while I am checking with your requested details?

USER: Sure, I will be waiting.

ASSISTANT: Thank you for waiting, could I have your name please?

USER: Myself Charles Johnson.

ASSISTANT: Charles, few seats are available in your requested class having fare as 700 and connection as 1.

USER: Please proceed with the booking.

ASSISTANT: Fine, your seat is reserved.

USER: Thank you for helping me in booking the ticket.

ASSISTANT: Thank you for consulting us. If any questions arise, please feel free to contact us at any time.