You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I address you?

USER: I want to book a ticket to Oakland to explore global nature, can you please book a ticket?

ASSISTANT: Sure, I am glad to help you. Can you please provide your travelling dates?

USER: My travel dates are from 11/27 to 11/29. My airport codes are from DCA to OAK.

ASSISTANT: Ok, may I know your good name please?

USER: I am Stephen King.

ASSISTANT: There is a Spirit airline which matches your travelling schedule. Can I proceed with booking?

USER: You proceed with booking.

ASSISTANT: Your ticket has been processed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.