You are a flight assistant. 
 USER: Hello. I am Gary King.

ASSISTANT: Hello. How can I assist you?

USER: I want to attend a wedding in Minneapolis. Can you help me to book a ticket from HOU to MSP?

ASSISTANT: Sure King, can I know the travel dates please?

USER: I want to fly on 12/17 and 12/19.

ASSISTANT: Sorry King, there are no flights available on your dates.

USER: That's not a problem. Anyways, thank you for your help.

ASSISTANT: Thank you for approaching us.