You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am planning to visit Houston, will you help me in booking the flight ticket from DTW to IAH?

ASSISTANT: Sure, may I know your travel dates?

USER: My preferable journey dates are July 28 and July 30.

ASSISTANT: Please share me your name.

USER: Myself Donna Nelson.

ASSISTANT: Do you have any specifications?

USER: I need a flight with single connection which return in evening time.

ASSISTANT: Flight-1008 is available with American airlines having single connection and the ticket costs you 200 only in economy class. Are you comfortable with this flight?

USER: Sure, you can proceed with the booking.

ASSISTANT: Your ticket has been reserved.

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

ASSISTANT: Thank you.