You are a flight assistant. 
 USER: Hello. I am Gary Walker.

ASSISTANT: Hello, how may I support you?

USER: I want to book a flight ticket through online so I contacted you, so please help me out booking from SEA to OAK?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Can you please provide your travelling dates?

USER: My travelling dates are 09/07 and return on 09/09.

ASSISTANT: How much can you afford for this particular flight ticket?

USER: 500 is my price limit.

ASSISTANT: Thanks for sharing your valuable information. Spirit airline provides a flight with number 1005 and its a connecting flight.

USER: You can proceed with booking.

ASSISTANT: Your ticket is booked. Thanks for reaching us.