You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what service you are looking for?

USER: Nicholas Taylor here. I would like to attend my sports events, so can you help me searching flights from MSP to ORD?

ASSISTANT: Great, could you please share the dates when you are planning to travel?

USER: I would like to start my travel on 08/17 and I am going to return on 08/19.

ASSISTANT: One moment please, I will search for the availability of the flights.

USER: Ok, I will wait for your reply.

ASSISTANT: Sorry to say that, there is no tickets available on any flights, as all tickets have been booked previously. Would you like to travel on any other dates?

USER: No, it's ok, no problem. Thank you for your services.

ASSISTANT: Ok, thank you for reaching us.