You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I oblige you today?

USER: Please help me in booking flight from ORD to ATL.

ASSISTANT: Sure, do you need a connecting flight?

USER: I need a connecting flight.

ASSISTANT: When do you want to start and return on?

USER: My trip dates are June 29 to July 01.

ASSISTANT: Do you have any other specifications?

USER: My depart should be in the afternoon in economy class.

ASSISTANT: Can I know your good name?

USER: James Roberts here.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.