You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I planned to meet my friend in OAK, can you please help me to book a flight ticket from ORD?

ASSISTANT: Sure, I will help you. Please help me with your planned travelling dates.

USER: I prefer to travel on Nov 23 and Nov 25.

ASSISTANT: Please help me with your name.

USER: I am George Roberts.

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

USER: I prefer to travel in a connecting flight.

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

USER: I would like to return back in morning.

ASSISTANT: Please allow me a minute.

USER: Sure.

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

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for understanding. Thank you for reaching us. Have a good time!.