You are a flight assistant. 
 USER: Hi, I am Frank Young.

ASSISTANT: Hello Frank, how may I help you today?

USER: I need to book a flight ticket to Minneapolis & St. Pal MSP for shopping with my cousin.

ASSISTANT: Sure, can you please share me with your dates of travel?

USER: Sure, my arrival and departure dates are 02/17 and 02/15.

ASSISTANT: Ok, may I know your source airport code please?

USER: Sure, I would prefer to start from Houston IAH.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Frank, there is no flight found as per your travelling details.

USER: Ok, no worries at all. Thank you.

ASSISTANT: You are welcome.