You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to attend for an interview in Denver, so please book a flight ticket from MSP to DEN.

ASSISTANT: May I know your trip dates?

USER: I want to fly on Apr 02, return on Apr 04.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: Could you share your name?

USER: My name is Gary Parker.

ASSISTANT: There were no flights found with your required dates to travel.

USER: No problem, thank you.

ASSISTANT: Thank you.