You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you for today?

USER: My family has suddenly planned a trip to IAD but those tickets were confirmed and my one is not confirmed, so can you book a ticket for me from AUS?

ASSISTANT: Sure, I am glad to assist you for today. Can you please let me know your planned dates of trip so that I can search you a perfect flight?

USER: Thank you for considering my request and I planned my dates on 11/20 and 11/22.

ASSISTANT: Hold for a bit, while I will find you a suitable flight.

USER: Yes, please go ahead. I will wait for your response.

ASSISTANT: Spirit airline is providing a flight which costs 100 with a single connection limit. Would you like to book this flight?

USER: Yes, please proceed with booking on my name Timothy Lee.

ASSISTANT: Your flight ticket is confirmed with flight 1002. Have a safe journey.

USER: That's great. My ticket is done with your help, thank you.

ASSISTANT: Most welcome, thank you for opting our service.