You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Donna Walker.

ASSISTANT: How may I help you?

USER: I need to fly from SEA to AUS, can you please help me to book a flight ticket?

ASSISTANT: Sure, I am glad to help you. May I know your depart date?

USER: I would like to start my journey on 04/21.

ASSISTANT: Kindly, mention your fare limit.

USER: My price is 1000.

ASSISTANT: When you have planned to catch the return flight?

USER: I intend to return on 04/23.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there is a connecting flight of Jet Blue airline available with fare 200. Shall I confirm it?

USER: Yes, please proceed.

ASSISTANT: Your reservation has been confirmed with flight number 1024.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.