You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Eric Harris. I want to book a flight ticket from MN-MSP to CA-SFO. Can you help me?

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

USER: 06/15  and 06/17 are my travelling dates.

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

USER: No issue. Thank you for the information.

ASSISTANT: Thank you for approaching us.