You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you?

USER: I want to book a flight ticket to Charlotte with price under 1000. can you please help me with booking a flight ticket?

ASSISTANT: Sure, I am here to aid you. Can you mention the airport codes of both routes?

USER: Airport codes are LAX-CLT.

ASSISTANT: May I have your name to proceed next?

USER: My name is Alexander Gonzalez.

ASSISTANT: Please assign the dates of your travel to check with the flights.

USER: Travel dates are 05/02 and 05/04.

ASSISTANT: Please wait for a minute, I will get back to you.

USER: OK.

ASSISTANT: Thanks for waiting, but sorry to inform you that no flights in search on your respective routes.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us, Have a nice day.

USER: Thanks for the help.