You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I need to book a flight ticket from ORD to SFO.

ASSISTANT: Sure, will you please provide your preferable dates of travelling?

USER: Sure, my journey dates are Jun 23 and Jun 25.

ASSISTANT: May I know your name to book the flight ticket?

USER: Sure, Stephanie Baker here.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Any other preferences do you have?

USER: I would prefer return time at afternoon.

ASSISTANT: We are apologize that, there are no direct flights running towards your region with your requested dates of travelling.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us, have a great day.