You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I abet you?

USER: Can you please help me in booking a flight ticket under the name of Michael Walker?

ASSISTANT: Sure, may I know your airport codes.

USER: I want to fly from Washington, DC - DCA to reach San Francisco, CA - SFO.

ASSISTANT: Please provide your travelling dates.

USER: My trip dates are 05/23 - 05/25.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Spirit airline with flight number 1024 and price of 200 available on your way. Shall I proceed.

USER: Please proceed.

ASSISTANT: Your booking has been processed.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.