You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nancy Anderson.

ASSISTANT: How can I assist you at this moment?

USER: I am planning to go for SFO from DEN. Can you please help me in booking my flight ticket?

ASSISTANT: Sure, I am happy to assist you in booking flight ticket. Can you please mention your preferable travel dates for booking flight ticket?

USER: My preferable dates are 02/19 and 02/21.

ASSISTANT: Please wait a moment, I will check flight availability in this route as per your requested dates.

USER: Ok, sure. Take your own time.

ASSISTANT: Based on your information, UA airline is ready to serve you with 1 connection with a minimum fare of 200 is available for you. Shall I book this flight ticket for you?

USER: Ok, please proceed with booking.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1008.

USER: Thank you.

ASSISTANT: You are welcome Nancy Anderson.