You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I have an appointment with my family doctor in BOS. Can you please help me to book a flight from PHX?

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

USER: Sure, I want to travel on May 30 and need to return on June 1.

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: Kevin Adams.

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

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thanks for contacting us.