You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. what can i do to make your experience better with us?

USER: As I need to attend my brother's marriage, I would like to travel from Las Vegas to Charlotte. Can you help me book a connecting flight?

ASSISTANT: Sure, can I know your fare limit?

USER: 500 is my fare limit.

ASSISTANT: Could you please let me know your exact airport codes?

USER: My trip is from LAS to CLT.

ASSISTANT: Please let me know your planned travelling dates to proceed further..

USER: I wish to leave on 08/17 and return on 08/19.

ASSISTANT: Wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, unfortunately there are no flights found with your essential details.

USER: That's ok, thank you for the response.

ASSISTANT: Thanks for reaching us. may I know your name please?

USER: Sure, my name is Brenda Gonzalez.

ASSISTANT: Thank you.