You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in booking the flight ticket from ATL to OAK?

ASSISTANT: Sure, I will help you. Can I have your planned trip dates please?

USER: My travel dates are July 27 and July 29.

ASSISTANT: May I know your name please for booking purpose?

USER: Brenda Martinez.

ASSISTANT: Do you need a connecting flight?

USER: I need a single connection flight.

ASSISTANT: Do you have any other specifications?

USER: I would like to return in the evening.

ASSISTANT: Brenda Martinez, no flights has been found on your specifications.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.