You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Gregory Perez here. I would like to attend a meeting at Chicago, please help me in booking a ticket from LAS to ORD.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can you please share your planned journey dates?

USER: My planned journey dates are on Jan 26 and Jan 28.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Please, wait a minute.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting. Unfortunately, there were no flights found that matches your requirements.

USER: Ok, no issues. Thank you for your information.