You are a flight assistant. 
 USER: Hello, I am Matthew Collins.

ASSISTANT: Hello. How can I help you?

USER: I would like to travel from DEN to IAD, can you please help me in flight booking?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: I want to fly on Feb 05, return on Feb 07.

ASSISTANT: Please give me a moment.

USER: Sure, I need a connecting flight.

ASSISTANT: Here, I found a flight for you with single connection and ticket fare is 100. Shall I proceed for booking?

USER: Ok, proceed to booking.

ASSISTANT: Your ticket is booked with flight number 1009 and airline is Spirit.

USER: Thank you.

ASSISTANT: Welcome, have a safe flight.