You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please book a flight ticket from PHL to CLT?

ASSISTANT: Sure, please tell us your name.

USER: Sure, myself Raymond Scott.

ASSISTANT: Thank you. Please let me know your travel dates.

USER: Sure, I have planned my travel dates as Apr 16 and Apr 18.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I am looking for single connecting flight.

ASSISTANT: Noted. Please wait for a while.

USER: I would like to return in evening time so please check with that.

ASSISTANT: Sorry, there is no flight available on your given travel dates.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: You are most welcome.