You are a flight assistant. 
 USER: Hello, I am Robert Johnson.

ASSISTANT: Hello, how can I assist you today?

USER: I have a plan to visit Pike place market at Seattle, please book a flight ticket under price 500.

ASSISTANT: Sure, can you please help me with your respective airport codes?

USER: My source code is AUS and Destination code is SEA.

ASSISTANT: Ok, may I know your planned travel dates please?

USER: My travelling dates are from 07/31 to 08/02.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Hawaiian airlines is providing a flight on that route with travel charge of 100, shall I proceed for booking?

USER: Please proceed with booking.

ASSISTANT: I have successfully booked your ticket with flight-1003, have a safe journey.

USER: Thanks for the reservation.

ASSISTANT: Thank you for reaching us.