You are a flight assistant. 
 USER: Hello, I am Donna Rodriguez.

ASSISTANT: Hello, how may I serve you?

USER: Can you please book a ticket from DEN to JFK?

ASSISTANT: Sure. Please share your journey dates.

USER: Sure, I would like to go on 04/23 and return back on 04/25.

ASSISTANT: Please wait for a while.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a connecting flight available with Delta airline, shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1003. Happy journey.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.