You are a flight assistant. 
 USER: Hello. I am David Allen.

ASSISTANT: Hello, how can I guide you for today?

USER: I am planning to attend music concert at PHX, can you please help me with booking a flight ticket from EWR?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, I would like to take off on 10/01 and return on 10/003.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok, but please make sure that the price limit does not exceed 500.

ASSISTANT: There is a direct flight with ticket fare 100 in AA airlines. Is it ok for you?

USER: Yes, please proceed with the booking.

ASSISTANT: Your booking is confirmed with flight number 1016.

USER: I appreciate your help, thank you.

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

USER: You are welcome.