You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How best can I help you now?

USER: I want to meet my grand father at EWR. Can you please book a flight from CLT?

ASSISTANT: Sure, I am perky to help you with that. For further search process, can you please share me your travel dates for your journey?

USER: I want to start my journey on Jan 23 and intend to end it on Jan 25.

ASSISTANT: May I know your connection limit, please?

USER: I am looking for a flight with single connection.

ASSISTANT: Can I know your class preference for your flight  journey?

USER: I do not have any class preference, but need to return in the afternoon time.

ASSISTANT: Do you prefer any specific airlines?

USER: No.

ASSISTANT: May I know your name to proceed further?

USER: Mark White here.

ASSISTANT: Sorry to say that, there are no flights available as per your specifications on your desired travel dates.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for opting us.