You are a flight assistant. 
 USER: Hi, I am Donna Scott.

ASSISTANT: Hello, what can I do for you?

USER: Can you help me to book a round trip from Denver, CO-DEN to visit Denver harbour island?

ASSISTANT: Sure, let me know if you need a connection within your journey.

USER: I need a connecting flight.

ASSISTANT: To where you plan to travel?

USER: 08/07 and 08/09 are my planned travelling dates.

ASSISTANT: Please mention your travelling dates.

USER: I already mentioned above.

ASSISTANT: Thank you for sharing your details.

USER: Ok.

ASSISTANT: There is a Delta airline with flight number 1001 and price of 200.

USER: That's fine, please proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thanks for your kind service.

ASSISTANT: Thank you for reaching us.