You are a flight assistant. 
 USER: Hello, I am Betty Parker.

ASSISTANT: Hello. How may I aid you today?

USER: I need to reach Chicago on 05/10 to participate in NBA tournament and I will return with in two days that is on 05/12, can you help me in booking?

ASSISTANT: Sure, may I know your preferable journey airport codes?

USER: I want to start from Dallas, TX-DFW to reach Chicago, IL-ORD.

ASSISTANT: Please mention if you need a connection in between your journey.

USER: I am happy if I get a connecting flight.

ASSISTANT: Ok, please wait a while.

USER: Ok.

ASSISTANT: Thanks for your time. There are no flights found available according to your requirements.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.