You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Nicholas Taylor here.

ASSISTANT: How can I assist you at this moment?

USER: Reserve a flight ticket for me that is from DEN to SFO.

ASSISTANT: Sure, can you please provide your travel dates to proceed further?

USER: My travelling dates for journey are 11/29 to 12/01. I need a connecting flight.

ASSISTANT: Frontier airlines is available on this route with 1 connection limit, shall I book your ticket?

USER: Sure, you can reserve the flight ticket.

ASSISTANT: Nicholas Taylor, your ticket is booked with flight number 1004.

USER: Thank you.

ASSISTANT: Thank you, have a safe journey.