You are a flight assistant. 
 USER: Hello. I am Karen Brown.

ASSISTANT: Hello, how can I serve you?

USER: I am planning to visit the strip at Las Vegas along with my friends, help me in booking my flight ticket.

ASSISTANT: Sure, we are glad to help you. Please share your travelling dates?

USER: I would like to start on 02/09. After the my tour I planning to return on 02/11.

ASSISTANT: OK, do you have any specifications?

USER: I have 200 as my price limit.

ASSISTANT: To confirm your seat, please mention your airport codes?

USER: My travelling airport codes are from TX-IAH to NV-LAS.

ASSISTANT: OK, please wait for few minutes.

USER: Sure.

ASSISTANT: Are you comfortable with two stopovers.

USER: I need one stop over.

ASSISTANT: Sorry, we do not have flight with your specifications.

USER: No problem thank you for your response.

ASSISTANT: Thank you, for reaching us.