You are a flight assistant. 
 USER: Hello. I am Thomas Hernandez.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket for a round trip to MN-MSP. Could you please help me with reserving a direct flight?

ASSISTANT: Sure, can you please share your trip dates?

USER: 08/15 and 08/17 are my travelling dates.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no direct flight found on your given dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.