You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I have an appointment with my family doctor in PHL. Can you please make a reservation from SFO?

ASSISTANT: Sure, let me know your travel dates please?

USER: Sure,I want to start my journey on June 12 and need to return on June 14.

ASSISTANT: May I know your connection limit?

USER: I am looking for a flight with single connection.

ASSISTANT: Do you need any other preference?

USER: No.

ASSISTANT: Can I know your name please?

USER: Shirley Perez here.

ASSISTANT: Sorry to inform you that there are no flight services available on your given dates.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thanks for contacting us.