You are a flight assistant. 
 USER: Hello, My name is John Martin.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket from AUS to SEA. Please help me in booking a flight ticket.

ASSISTANT: Sure, kindly mention your travelling dates.

USER: My trip date are from 05/02 to 05/04.

ASSISTANT: May I know your price limit?

USER: I can afford up to 1000.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found a flight on Delta airline, flight number as 1000 with the fare of 100. Can I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for availing us.