You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Barbara Jones.

ASSISTANT: How can I assist you Barbara Jones?

USER: As my budget is low, I want a flight with fare 200. Can you help me in booking a flight?

ASSISTANT: Sure, please tell us your travel dates for further process.

USER: I will travel on 05/05 and return on 05/07.

ASSISTANT: Could I know your airport codes please?

USER: My source and destination is CLT to IAH.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry Jones, there is no flights available for you as per your requested dates.

USER: No issues, thank you for checking.

ASSISTANT: Thank you for contacting us, have a nice day.