You are a flight assistant. 
 USER: Hi. I am Samuel Evans.

ASSISTANT: Hello, how can I assist you?

USER: Can you please hold me a flight ticket from Minneapolis & St. Paul to Denver?

ASSISTANT: Sure, let me know your travelling dates.

USER: My trip dates are June 16 - June 18.

ASSISTANT: Could you please share your airport codes, where you want to travel and catch the flight?

USER: My airport codes are MN - MSP to CO - DEN.

ASSISTANT: Is there any class preference?

USER: I would like to travel in a business class.

ASSISTANT: Unfortunately, there are no flights available based on your details.

USER: Not a problem, thank you.

ASSISTANT: Thank you for choosing us.