You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Michelle Harris. I am planning to meet my friend in OAK, can you help me in booking the ticket from MSP?

ASSISTANT: Sure, can I know your travelling dates?

USER: My planning dates are from 05/20 to 05/22.

ASSISTANT: Give me a minute.

USER: Ok.

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

USER: That's ok. Anyway, thank you for your immediate response.

ASSISTANT: Thank you for opting us.

USER: You are welcome.