You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Edward Martin, want to travel from ATL to ORD. Can you please help me?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are from 03/19 to 03/21.

ASSISTANT: Do you have any specifications?

USER: I want economy class for this flight.

ASSISTANT: Do you prefer connecting flight or direct flight?

USER: I want a single connecting flight.

ASSISTANT: Do you have any specification?

USER: I would preferred to return in the afternoon.

ASSISTANT: Sorry, there is no flight on your details.

USER: It's ok, thank you.

ASSISTANT: Thank you.