You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Donna Martin here.

ASSISTANT: In which way I can help you at this moment?

USER: I am looking for a flight from PHX to EWR, can you help me in booking the flight ticket?

ASSISTANT: Sure, I am happy to help you in booking flight ticket. Could you please mention your preferable travel dates for booking flight ticket?

USER: Thank you, my planned travel dates are 06/05 and 06/07.

ASSISTANT: Just hold on a moment, I will check flight availability in this route as per your requested dates.

USER: Ok, ensure that my airfare shouldn't exceed 500.

ASSISTANT: Sure. Based on your information, Frontier airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I book this flight ticket for you?

USER: The intent which you provided is suitable to my criteria, please proceed in booking with this flight.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1017.

USER: Thank you for your expeditious service.

ASSISTANT: Thank you for reaching us, have a nice day.