You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: I want to book a flight ticket to attend a meeting at TX-DFW from IL-ORD.

ASSISTANT: Please help me with your travel dates.

USER: 08/14 and 08/16 are my travelling dates.

ASSISTANT: Can I get your name?

USER: I am Nicole Jones.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your dates.

USER: No issue. Thank you.

ASSISTANT: Thank you, Have a nice day.