You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in booking a flight ticket from IAD to JFK?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: I want to fly on Oct 07 and return on Oct 09.

ASSISTANT: Do you need stopover in between your journey?

USER: I need a single connection.

ASSISTANT: Please let me know if you have any other specifications.

USER: I would like to return in the afternoon time.

ASSISTANT: May I know your good name please?

USER: Myself Barbara Hernandez.

ASSISTANT: Sorry to inform you that there are no flights available for you which will return in the afternoon time.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.