You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephanie Turner.

ASSISTANT: Stephanie Turner, how can I aid you today?

USER: I would like to book a flight which depart in the evening. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: Sure, my travelling dates are Apr 18 and Apr 20.

ASSISTANT: Ok, can you please provide your airport codes?

USER: Sure, my airport codes are ORD to CLT.

ASSISTANT: Ok, do you have any other specifications?

USER: Yes, I need a break in between the journey.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Sure.

ASSISTANT: Sorry Stephanie Turner, there are no flights available on your requested dates.

USER: No worries, thank you for the information.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.