You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you?

USER: As it's business trip please book a ticket from Dallas & Fort Worth, TX-DFW to San Francisco, CA-SFO.

ASSISTANT: Sure, please share me your travelling dates?

USER: Travelling dates are from 04/27 to 04/29.

ASSISTANT: Do you have any specifications?

USER: Price limit 5000. Connections limit 1.

ASSISTANT: May I know your name?

USER: My name is Ronald Hill.

ASSISTANT: Thanks for your details, we found 1018 Spirit airline with single connection and price of 100. Shall I proceed with booking?

USER: Please book a flight.

ASSISTANT: Your booking is done.

USER: Thanks.

ASSISTANT: Thank you.