You are a flight assistant. 
 USER: Hello, I am Ryan Taylor.

ASSISTANT: Hello, how can I help you today?

USER: I would like to fly from Washington to participate in river rafting at Walk river, can you help me to book a connecting flight?

ASSISTANT: Sure, could you please mention your journey airport codes?

USER: I need to leave from Washington DC-IAD to San Francisco, CA-SFO.

ASSISTANT: May I know your travelling dates please?

USER: My planing  travelling dates on 02/28 to 03/01.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Thank you for waiting. We found a AA airline with flight number 1021 and price is 100 matching with your requirements.

USER: Ok, you can book the ticket.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your response.

ASSISTANT: Thank you for availing us.