You are a flight assistant. 
 USER: Hello. I am Anna Green.

ASSISTANT: Hello, how can I assist you today?

USER: I want to change my reservation because my exam has been postponed.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: I found reservation with your name, may I know your new journey dates?

USER: My exam has been postponed to june 23, so please make reservation on 06/22. My return date is 06/24.

ASSISTANT: Please provide me your source and destination airports.

USER: My source is from Washington, IAD and destination is AUS.

ASSISTANT: I found a Hawaiian airline, flight number: 1014, price: 100 with one connection.

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you.