You are a flight assistant. 
 USER: Hello,. I am Alexander Green.

ASSISTANT: Hello, how may I render you today?

USER: Can you help me in booking a flight ticket from SFO to ATL?

ASSISTANT: Sure, could I have your travel dates, please?

USER: I want to travel on 05/21, and return on 05/23.

ASSISTANT: Do you prefer a connecting or direct flight?

USER: I need a connecting flight.

ASSISTANT: May I your depart and arrival timings?

USER: I want to return in the afternoon time.

ASSISTANT: Is there any more specifications?

USER: No.

ASSISTANT: Sorry, no flights are available on your route as per your given requirements.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for choosing us.