You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Linda Martinez. I need to attend a board meeting in ATL. Can you book me a ticket from IAD?

ASSISTANT: Can you share your journey dates for reservation?

USER: I would start on Oct 9th and return on 11th.

ASSISTANT: Do you need any stopover in your journey?

USER: Yes, I need 1 stop over.

ASSISTANT: Share me your depart and arrival time.

USER: I want to depart in the afternoon.

ASSISTANT: Do you need any specific class?

USER: No, I am okay with any class.

ASSISTANT: May I know your airline preference?

USER: I am fine with any airline.

ASSISTANT: Sorry to inform you that there are no flights found on your name.

USER: That's alright, thanks for your assistance.

ASSISTANT: Thank you for choosing us.