You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Linda Roberts.

ASSISTANT: How can I help you?

USER: I have a live concert at Washington, please help me in booking a ticket.

ASSISTANT: Sure, may I know your airport codes please?

USER: My airport codes are AUS and IAD.

ASSISTANT: Can you please help me with your travel dates?

USER: My journey dates are 03/20 and 03/22.

ASSISTANT: AA airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket has been booked with flight-1008, have a safe journey.

USER: Thank you for your response.

ASSISTANT: Thank you for choosing us.