You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me with booking a flight ticket from DCA to AUS?

ASSISTANT: Sure, can you mention your travel dates?

USER: My travel dates are Aug 20 and 22.

ASSISTANT: Ok, do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Any other preferences you have?

USER: I would like to return at evening.

ASSISTANT: Ok, may I know your name please?

USER: My name is Linda Young.

ASSISTANT: Delta Airlines has a connecting flight with number 1001 for fare 1001 which returns at 1:00 hours, shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Your ticket is confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.