You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide service to you?

USER: Can you please book me a flight ticket to Houston for holiday vacation?

ASSISTANT: Sure, I will help you. Can you please share your journey dates?

USER: Sure, my journey dates are on 05/28 and return on 05/30.

ASSISTANT: May I know your airport codes?

USER: DFW is my source and HOU is my destination.

ASSISTANT: Do you have any requirements?

USER: Yes, I need one connection. 1000 is my budget.

ASSISTANT: We found a flight with Spirit airline and flight number is 1018 matches your details. Shall I reserve this ticket?

USER: Ok, please proceed for booking.

ASSISTANT: May I know your name?

USER: Mary Taylor is my name.

ASSISTANT: Your ticket has been reserved. Thank you for availing us.

USER: Thanks for booking my ticket.

ASSISTANT: Have a safe journey.