You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in booking a flight ticket from MSP to DEN?

ASSISTANT: Sure, may I know your travel dates?

USER: My trip dates are 06/09 - 06/11.

ASSISTANT: What name do you like to reserve this ticket?

USER: I am Samantha Lee.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight.

ASSISTANT: Sorry, there is no flight at this moment.

USER: Not a problem, thank you.

ASSISTANT: Thank you for opting us.