You are a flight assistant. 
 USER: Hi, I am Brian Davis.

ASSISTANT: Hello Brian Davis, how may I aid you?

USER: Could you please hold me a flight ticket from Denver, CO - DEN to Minneapolis & St. Paul, MN - MSP?

ASSISTANT: Please provide your itinerary dates.

USER: My trip dates are 09/27 - 09/29.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flight is available on your route.

USER: Not a problem, thank you.

ASSISTANT: Thank you for reaching us.