You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. Welcome to Austin airline agency. How can I assist you today?

USER: I am looking for booking a ticket to Denver, CO - DEN  going to give a presentation of my story, can you please book a ticket?

ASSISTANT: Sure, will you provide your source airport code?

USER: My source airport code is San Francisco, CA - SFO which is my home city.

ASSISTANT: Please provide your travelling dates.

USER: Sure, my travelling dates are 02/16 and 02/18.

ASSISTANT: Please give me a moment.

USER: Ok, sure.

ASSISTANT: Thank you for waiting.

USER: Ok, is there any flight for me?

ASSISTANT: May I know your name please?

USER: Myself Nancy Mitchell.

ASSISTANT: As per your request, there is a flight with price 1200 and the connections 1. Shall I proceed for booking?

USER: No, I want a direct flight.

ASSISTANT: Unfortunately, there is no direct flights available.

USER: It's ok fine.I will go with another alternative services. Thank you for the information.

ASSISTANT: Thank you for reaching us.Have a great day.