You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to attend a Seminar in Houston. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your planned nearest airport codes please?

USER: My airport codes are DTW and HOU.

ASSISTANT: May I know your planned travel dates?

USER: My travelling dates are Apr 01 and Apr 03.

ASSISTANT: Do you have any limits on number of connections?

USER: I prefer single connecting flight.

ASSISTANT: Do you have any another specifications on your journey?

USER: No.

ASSISTANT: May I know your name for the booking process? Sorry, no flights are available on that route?

USER: My name is Michelle Johnson. Anyway, thanks for the information.

ASSISTANT: Welcome, thank you for reaching us.