You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you?

USER: I am Samuel White. I want to book a flight ticket from PHL to AUS to meet my friend, can you please help me to book a flight with fare 500?

ASSISTANT: Help me with your travel dates?

USER: My trip dates are 04/08 to 04/10.

ASSISTANT: Do you have any preference?

USER: I need a flight with single connection.

ASSISTANT:  We found a connecting flight UA with flight number 1005 and fare is 100.

USER: Ok, book the ticket.

ASSISTANT:  Your booking is confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you.