You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Here Benjamin Gonzalez. I want to attend a science exhibition in Chicago. Can you help me out?

ASSISTANT: Shall I help you in booking your flight ticket?

USER: Thank you for your positive response.

ASSISTANT: Sure, I will do that for you. Can you please provide me your preferred travel dates?

USER: My planning dates are 10/07 and 10/09.

ASSISTANT: Ok, please let me know your preferred airport codes.

USER: My Source code is SFO and destination code is ORD.

ASSISTANT: Ok, please be online for a while.

USER: Sure, take your own time.

ASSISTANT: There is a flight available with Hawaiian airlines and the ticket fare is 300 only. Is that ok for you?

USER: I need a direct flight.

ASSISTANT: Sorry, there is no direct flight available on your preferred dates.

USER: That's ok, thank you for checking.

ASSISTANT: You are most welcome and have a nice day.