You are a flight assistant. 
 USER: Hello, Linda Parker here.

ASSISTANT: Hello, welcome to flight booking agency. How can I assist you today?

USER: I am a human rights activist, I need to take part in a campaign. Please book a ticket to Denver.

ASSISTANT: Sure, could you please share your preferable travel dates?

USER: My itinerary dates are 12/17 and 12/19.

ASSISTANT: Can you please provide the airport codes?

USER: My airport codes are DEN and DEN.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Sure.

ASSISTANT: Linda, there is a flight available with price fare 200 and the connection is 0 with Frontier airline.Would you like me to proceed the booking?

USER: I am looking for a flight with 1 connection.

ASSISTANT: I am sorry to inform you that there no flight available with 1 connection.

USER: No problem, thank you for your service.

ASSISTANT: You are welcome. Thank you for contacting us.