You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Nancy Perez, can you help me to book a flight from DEN to SFO?

ASSISTANT: Ok, please mention your travelling dates?

USER: My travelling dates are Nov 17 and 19.

ASSISTANT: Ok, please wait.

USER: Sure. I need a connecting flight.

ASSISTANT: There is a connecting flight with fare 100 and 1026 as flight number provided by Spirit Airline and the ticket is available in economy class. Shall I proceed with booking?

USER: Proceed with booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you.

ASSISTANT: Most welcome.