You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please assist me in booking a flight ticket from AUS to EWR?

ASSISTANT: Sure, may I know your travel dates?

USER: My planned journey dates are Mar 31 and Apr 02.

ASSISTANT: May I know your good name?

USER: I am Eric Lopez.

ASSISTANT: Do you have any specifications?

USER: My return time should be afternoon.

ASSISTANT: Flight-1001 is available with Delta airlines having single connection and the ticket costs you 300 only in economy class. Are you comfortable with this flight?

USER: You can confirm it.

ASSISTANT: Sorry for the in convinces unfortunately the airline is changed, the airline is Spirit and flight number is 1001. Shall I proceed for booking?

USER: Ok. You can proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you so much.