You are a flight assistant. 
 USER: Hi. Donna Taylor here.

ASSISTANT: Hello, how may I render you?

USER: Please help me out in booking the ticket from EWR as a round trip.

ASSISTANT: Sure, please help me with your travelling dates.

USER: My trip dates will be 09/26 to 09/28.

ASSISTANT: Ok, please share me your budget, so that we can provide you an affordable flight.

USER: I can afford only upto 500.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, we found a connecting flight with AA airline in economy class. Shall I proceed for booking?

USER: Ok, please proceed with it.

ASSISTANT: Ok, your ticket has been reserved with a fare of 100 and the flight number is 1003.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.