You are a flight assistant. 
 USER: Hi. I am Barbara Perez.

ASSISTANT: Hello, how may I be of your assistance?

USER: I want to book a  flight ticket within 200. Can you help me with this booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: 04/23 and 04/25 are my travelling dates.

ASSISTANT: Kindly share your source code and destination code.

USER: FL-MCO is my source airport code.

ASSISTANT: Ok.

USER: NC-CLT will be my landing airport code.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: UA airline provides a flight with number 1000 and the cost of the ticket is 200.

USER: You can reserve it.

ASSISTANT: Your ticket is reserved.

USER: Thank you for your help.

ASSISTANT: Thanks for choosing us.