You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Is this flight ticket booking agency?

ASSISTANT: Yes, it is flight booking agency only. How may I assist you today?

USER: I want to visit Campus Martius Park it is in Detroit, can you please check is there any flight available from Minneapolis on 07/21?

ASSISTANT: Sue, I will check.

USER: Thanks.

ASSISTANT: Can you please provide me your source and destination airport codes?

USER: I want to take off from MSP airport because it is near to my location and destination airport is DTW.

ASSISTANT: Do you have any return trip plans?

USER: Yes, please book my return ticket also on 07/23.

ASSISTANT: Can I have your name, please?

USER: Sure, my name is Deborah Harris.

ASSISTANT: Delta airline is providing flight for you, it's exactly matched with your criteria. Can I make a reservation for you?

USER: Oh great, please book this flight ticket on my name.

ASSISTANT: Your seat has been reserved with your name of Deborah Harris and flight number is 1022.

USER: Thank you for your help.

ASSISTANT: Have a great journey, I think you will enjoy this trip. It's my pleasure.