You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Jessica Smith. Can you please book me a plane ticket to MSP from SFO to attend my brother's marriage?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, I am willing to travel from 12/08 to 12/10.

ASSISTANT: Sorry for the inconvenience, there is no flight available on your requested dates.

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

ASSISTANT: Thank you for approaching us.