You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you for the day?

USER: Can you please book a flight ticket from IAD to PHX?

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

USER: I want to travel in Sept from 25th to 27th.

ASSISTANT: Can I know your connection limit?

USER: I need a connecting flight to travel.

ASSISTANT: Which class do you prefer either economy or business?

USER: I am fine with any class.

ASSISTANT: Do you have any other specifications?

USER: Please make sure my return time is in morning.

ASSISTANT: May I know your name please?

USER: I am Stephanie Scott.

ASSISTANT: Sorry to inform you that, there are no flights found on this route as per your details.

USER: That's ok, thank you for your information.

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