You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I'm Jerry Jones. I would like to watch a snow festival at Seattle, WA - SEA. Can you please book a ticket with a price limit of 500?

ASSISTANT: Sure, may I know your origin?

USER: I prefer to board at NV - LAS.

ASSISTANT: When do you want to travel?

USER: I want to depart on 08/12 and return on 08/14.

ASSISTANT: We are happy to inform that we found a connecting flight with fare of 100. Shall I proceed for booking with Spirit airline?

USER: Please reserve this.

ASSISTANT: Your ticket has been reserved with 1004 flight number.

USER: Thanks for booking my ticket.

ASSISTANT: Thanks for consulting us.