You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket from PHL to SFO, can you please help me?

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

USER: Thank you for taking my request. My planned travel dates are Feb 8 and Feb 10 respectively.

ASSISTANT: Do you need any break in between your journey?

USER: Yes, I need one break in between my journey.

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

USER: No, other specifications. Anyway thank you for asking.

ASSISTANT: Can I have your good name please?

USER: Sure, myself Robert Wilson.

ASSISTANT: Sorry, there are no flights available for you on those dates.

USER: Sad to hear, thank you for your time.

ASSISTANT: Thank you for choosing us.