You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I would like to make my sister's reservation from MSP to LAS, can you please help me out?

ASSISTANT: Sure, can I know your travel dates?

USER: She want to depart on 08/09 and return on 08/11.

ASSISTANT: Can I know your name?

USER: Please book the ticket on the name of Susan White.

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

USER: Not an issue, thank you for checking.

ASSISTANT: You are welcome.