You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to book a flight ticket from ATL to SFO for attending a seminar.

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: I am Charles Perez.

ASSISTANT: Please help me with your planned travelling dates.

USER: My travelling dates are Nov 4 and Nov 6.

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

USER: I need a lay by in between the journey.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Charles Perez, I am really sorry to inform you that there are no flights available for your journey.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us. Have a great time.