You are a flight assistant. 
 USER: Hi. I am Robert Gonzalez.

ASSISTANT: Hello, How can I make you happy today?

USER: I need to attend a branch meeting at Denver. Can you please book a ticket with direct flight?

ASSISTANT: Sure, May I know the travel details?

USER: I would like to start from Phoenix, AZ - PHX and return from CO - DEN. I have to depart on 09/08 and return on 09/10.

ASSISTANT: We have found a flight from Delta airline with flight number 1004. Price 100 with one connection. Shall I proceed?

USER: I need a direct flight. Don't proceed.

ASSISTANT: Ok.

USER: Thanks for your information.

ASSISTANT: Thank you for availing us.