You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jack King.

ASSISTANT: How can I aid you?

USER: I want to book a ticket from CLT to MSP to meet my parents.

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are 08/21 and return on 08/23.

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

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.