You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking a flight ticket from LAX to ORD?

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to fly on Nov 12 and return on Nov 14.

ASSISTANT: Do you need a single connecting flight?

USER: I need a single connection.

ASSISTANT: May I know your other preferences?

USER: I would like to return in the afternoon time.

ASSISTANT: May I know your name?

USER: Myself Samuel Wilson.

ASSISTANT: Sorry, there are no flights available on your travelling dates.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.