You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am a journalist, I have to interview a celebrity at San Francisco. Please book my ticket from AUS to SFO.

ASSISTANT: May I know your travelling dates?

USER: Sure, I would like to travel on 07/24 and back on 07/26.

ASSISTANT: Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: May I know your name?

USER: My name is Gary Anderson.

ASSISTANT: Sorry to say, no flight is available for you.

USER: No problem. Thank you for assisting me.

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