You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I'm planning to celebrate this Christmas eve at Boston, can you please help me in booking a business class ticket?

ASSISTANT: Sure, please provide me your planned travel dates.

USER: My planned dates are 23rd Dec and 25th Dec.

ASSISTANT: May I know your connection limit?

USER: Sure, I am comfortable with maximum single connecting flight.

ASSISTANT: Please share your source airport code.

USER: It's LAS.

ASSISTANT: May I know your name to proceed further?

USER: Sure, myself Jacob Walker.

ASSISTANT: Please stay connected for a while.

USER: Sure.

ASSISTANT: We are sorry to inform you that we don't have any flight available on requested dates.

USER: No problem, thank you.

ASSISTANT: Thank you.