You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Myself Christine Adams. I want to visit Austin next week, can you please book a flight ticket for me?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My departure date is 03/19 and please book my return ticket also on 03/21.

ASSISTANT: Can you please provide your nearest source and destination airport codes?

USER: I want to fly from SEA airport and destination airport is AUS.

ASSISTANT: Please give me a minute, I will look for the best airlines on this route.

USER: Ok.

ASSISTANT: Here is a flight with ticket fare 100 in Spirit airlines with connection 1, would you like me to proceed with the booking?

USER: Please book this flight ticket for me.

ASSISTANT: Your booking is confirmed with flight number 1004.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us, have a nice day.