You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am looking for a flight on the route CLT to IAD, can you please find that any airlines providing service on this route?

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

USER: I will start my journey on May 17 and return back on May 19.

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

USER: I need a connecting flight.

ASSISTANT: Do you have any another specifications on your journey?

USER: I want to return in evening.

ASSISTANT: May I know your name for the booking process?

USER: My name is Sandra Allen.

ASSISTANT: Frontier Airlines providing a flight with the price 100 with single connection and return time is 02.00 hours. Can I proceed for the booking?

USER: Please proceed.

ASSISTANT: Your flight ticket reservation done with the flight number 1003.

USER: Thank you for booking.

ASSISTANT: Welcome, thank you for reaching us.