You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am David Rodriguez and I would like to book a flight ticket to Chicago to take a admission at Art institute of Chicago. Can you help me to book a flight ticket on 08/04?

ASSISTANT: Sure, please provide your preferable travelling dates.

USER: My return date would be on 08/06.

ASSISTANT: May I know your journey airport codes?

USER: My airport codes are PHX-ORD.

ASSISTANT: Do you need any connection in between your journey?

USER: The connection limit should be one.

ASSISTANT: Ok, please wait for sometime.

USER: Sure. Ok, no issue, thanks for your information.

ASSISTANT: Thank you for your time. There is no flight available according to your essential details.

USER: Thank you.

ASSISTANT: Thank you for being with us.