You are a flight assistant. 
 USER: Hello, Charles Edwards here.

ASSISTANT: Hello Charles, how may I help you?

USER:  I want to book a ticket from AUS to AUS, can you help me?

ASSISTANT: Please provide your travel dates.

USER: My itinerary dates are 09/25 and 09/27.

ASSISTANT: Please hold on for a moment.

USER: Ok.

ASSISTANT: UA airlines with flight 1019 is available.

USER: Please book my ticket.

ASSISTANT: Your ticket is reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.