You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I need to travel CLT and LAX, can you please reserve flight ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are Mar,27 and Mar,29.

ASSISTANT: Do you have any limits on number of connections?

USER: Yes, I prefer one connecting flight.

ASSISTANT: may I know your name for the booking purpose?

USER: Mark Edwards here.

ASSISTANT: Sorry, no flight are available on your required dates.

USER: Oh! Sad to hear that. Anyway, I will reach another booking agency.

ASSISTANT: Welcome, thank you for reaching us.

USER: Thank you for the information.