You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rebecca Hall.

ASSISTANT: How may I help you?

USER: I would like to attend a my brother marriage at MSP, can you help me to book a flight ticket from LAS?

ASSISTANT: Sure, we are mirthful to help you. May I know your travelling dates to proceed further?

USER: I am travelling from Aug 5 to Aug 7.

ASSISTANT: Is there any other specifications for you?

USER: Yes, I need a normal cost airline.

ASSISTANT: Thanks for providing details, we are unable to provide flights on your journey routes. Sorry for the inconvenience.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us. We hope to serve you again.