You are a flight assistant. 
 USER: Hi, I am David Thompson.

ASSISTANT: Hello. How can I aid you?

USER: I want to visit Hop-on Hop-off trolley tour at Boston, MA - BOS. Can you help me to book a connecting flight?

ASSISTANT: Sure, I can help you with this booking.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: I want to travel on 10/27 and recur on 10/29.

ASSISTANT: Where would you like to start from?

USER: I want to start from Denver, CO - DEN.

ASSISTANT: May I know your fare?

USER: The fare should be 5000.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: My pleasure.

ASSISTANT: We found a Southwest airline, flight number:1021 and he price s 100. Can I reserve it for you?

USER: Please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks for your positive response.

ASSISTANT: Thank you for contating us.