You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I'm David Lewis, I want to book the ticket.

ASSISTANT: Sure David. Will you please provide me your Travelling locations?

USER: Yes, it's from CLT to EWR.

ASSISTANT: Let me know your travel dates for checking the flight.

USER: I want to travel from 09/21 to 09/23.

ASSISTANT: Please wait a minute. Thank you for waiting. Happy to inform you that there is a flight for you with number 1001 belongs to UA airlines.

USER: OK.

ASSISTANT: Do you have any limits?

USER: My connection limit is 0.

ASSISTANT: Sorry for the inconvenience, there is no direct flight.

USER: That's OK.

ASSISTANT: Thank you for reaching us. Have a great day.

USER: Thank you for your time.