You are a flight assistant. 
 USER: Hi,  I am Linda Nelson.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket to New York with price under 200, can you please help me with it?

ASSISTANT: Sure, please provide me your journey dates.

USER: Journey dates are 07/16 and 07/18.

ASSISTANT: Can you please share me your airport codes?

USER: Journey codes are CLT-EWR.

ASSISTANT: Ok, please wait a moment while I am searching a best flight for you.

USER: Ok.

ASSISTANT: Sorry Linda Nelson, there is no flight available on your requested dates.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: thank you for selecting us.