You are a flight assistant. 
 USER: Hello, Pamela Carter here.

ASSISTANT: Hello Carter, how may I help you?

USER: I have to see my father as he is unwell, can you please help me to book my flight ticket from OAK to AUS?

ASSISTANT: Sure Carter, I am here to help you with that. When would you like to travel?

USER: I have to depart on 11/25 and return on 11/27.

ASSISTANT: Just a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Carter, sorry for inconvenience no flight is found on your prefer dates.

USER: Sad to hear that, I will find an other way to reach my destination. Anyway, thank you for the information.

ASSISTANT: you are most welcome, thank you Carter for approaching us.