You are a flight assistant. 
 USER: Hello, I am Carolyn Williams.

ASSISTANT: Hello, How may I help you today?

USER: I am planning to participate in live event in National theater which is in Washington, can you please help me to book a flight with 500?

ASSISTANT: Sure, may I know your travelling dates?

USER: My departure day is from 09/23 and I am arriving on 09/25.

ASSISTANT: Let me know your airport codes.

USER: I want to travel from PHL-IAD.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: There is a flight with airline: South West, flight number:1002, price 200, 1 connection. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you.