You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Mark Campbell.

ASSISTANT: How may I guide you?

USER: I am looking for a flight from Boston to meet, can you help me in booking the flight ticket from BOS to AUS?

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

USER: Sure, my travel dates are 08/25 and 08/27.

ASSISTANT: Please hold on a moment, Mark.

USER: Ok, I will wait for your response.

ASSISTANT: Thank you for your waiting, I found a flight for you in Delta airlines with fare 100. Shall I book your ticket?

USER: That's fine, proceed booking with that flight.

ASSISTANT: Ok, your ticket has been booked with flight number 1008.

USER: Thank you for your expeditious service.

ASSISTANT: Thank you for approaching us.