You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I want to book a flight ticket under a fare of 500. Can you help me?

ASSISTANT: Sure, May I know your name?

USER: My name is Dennis Johnson.

ASSISTANT: Ok. Please let me know the journey details to process your booking.

USER: Sure, my source : Chicago, IL - ORD and destination : Houston, TX - HOU.

ASSISTANT: Can you please provide your journey dates?

USER: I need to travel on 07/11 and 07/13.

ASSISTANT: Thanks for providing the details. We are happy to inform you that, there was 1021 flight of Spirit airline with one connection was available that matches your requirements. Do you want me to confirm this ticket?

USER: Ok, please confirm it.

ASSISTANT: Your ticket has been reserved. Thanks for contacting us.

USER: Thanks for your help, I am happy with your service.