You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to meet my friend in Atlanta. Can you help me in booking flight ticket from DCA to ATL?

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

USER: My trip dates are Apr 21 to Apr 23.

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

USER: I need a direct flight.

ASSISTANT: May I know your name?

USER: Myself Shirley Allen.

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

USER: No.

ASSISTANT: Hawaiian  Airlines providing a flight with the price 200 with single connection. Can I proceed for the booking.

USER: Don't proceed for booking. I need a direct flight.

ASSISTANT: Unfortunately there is no flights on your requirements.

USER: Ok, no problem. Thank you.

ASSISTANT: Welcome, thank you for reaching us.