You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to book a ticket from SFO to PHL?

ASSISTANT: When are you planning to make your journey?

USER: My travelling dates are on Jan 31 and Feb 02.

ASSISTANT: Is there any connection limit for you?

USER: I need a single connecting flight.

ASSISTANT: May I know your name?

USER: My name is Jerry Young.

ASSISTANT: Any other specifications required for your travel?

USER: No.

ASSISTANT: Sorry Jerry Young, there is no flight with your respective dates of travel.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thanks for reaching us.