You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephanie Carter.

ASSISTANT: How may I help you today?

USER: I am planning to book a ticket from ORD to EWR. Can you please help me out to book a ticket for me?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable departure and return dates of travelling?

USER: I am planning to travel on Sept 09 and return back on Sept 11.

ASSISTANT: Do you have any class preference?

USER: No, my depart time should be morning.

ASSISTANT: Do you have any airline preference?

USER: No, I am looking for a direct flight.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure.

ASSISTANT: We regret to inform you that, there are no direct flights are available for your request with your planned dates of travelling.

USER: That's fine, thank you for your service.

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