You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Lisa Green.

ASSISTANT: How can I assist you?

USER: Can you help me in booking from EWR to MSP?

ASSISTANT: Sure, can I know your travel dates?

USER: My travelling dates are 10/13 to 10/15.

ASSISTANT: Please give me a minute.

USER: Ok.

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

USER: No issue, thank you.

ASSISTANT: You are welcome.