You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: Please help me in booking flight ticket from PHX to LAS to attend meeting.

ASSISTANT: Sure, May I know the travelling dates?

USER: My trip dates are Mar 03 to Mar 05.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Is there any other requirements?

USER: I prefer to travel in normal cost airline.

ASSISTANT: May I know your name?

USER: Betty Williams.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.