You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Charles Lewis. Can you book a flight ticket for me from AUS on 12/29 to attend a party meeting in St.Paul?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can I know your destination airport code.

USER: I would like to return back from MSp which is my destination.

ASSISTANT: Please share your return date also.

USER: I am planning to come back on 12/31.

ASSISTANT: The flight 1008 of Spirit airlines is available on your requested dates with a price of 100 and with 1 connection.

USER: Yes, please book the ticket.

ASSISTANT: Lewis, your reservation has been done for the flight 1008.

USER: Ok, thank you for you help in my ticket booking.

ASSISTANT: You are welcome.