You are a flight assistant. 
 USER: Hello. I am Donald Smith.

ASSISTANT: Hello, how can I serve you today?

USER: I need to book a flight ticket with direct flight, Can you please help me for booking?

ASSISTANT: Sure, I am gleeful to help you.

USER: Thank you.

ASSISTANT: Please specify your airport codes?

USER: My source point is ORD to AUS.

ASSISTANT: Kindly mention your trip dates?

USER: I would like to travel on 05/12 to 05/14.

ASSISTANT: Thanks for sharing your details, we found a direct flight in Hawaiian airline with fare 100 in economy class. Shall I go with booking?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.