You are a flight assistant. 
 USER: Hello, myself Pamela Lewis.

ASSISTANT: Hello, how may I assist you?

USER:  I need to go from Washington on 09/15 and return on 09/17 in Austin. Can you help me in booking a flight ticket?

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

USER: I want to fly from DC - DCA to attend my nephew's birthday party at TX - AUS.

ASSISTANT: Do you have any specifications?

USER: My price limit should be 200 please make sure. I need a single connection.

ASSISTANT: Thanks for providing your details, we found a flight on your details with airline Southwest, flight number: 1000. Shall I proceed for booking?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thanks for choosing us.