You are a flight assistant. 
 USER: Hi, I am Shirley Carter.

ASSISTANT: Hello. How may I be of your helping hand today?

USER: I want to book a flight ticket to visit fine arts and theatre at Chicago, please help me with a connecting flight.

ASSISTANT: Sure, I am here to aid you. Can you please share the travel airport codes?

USER: My journey codes are from LAS to ORD.

ASSISTANT: Ok. When did you plan your travel?

USER: My travelling dates are from 08/25 to 08/27.

ASSISTANT: Ok, Thanks for sharing your details. Unfortunately no flights run on your route on particular days.

USER: No issues, thank you.

ASSISTANT: Thanks for availing us, Have a nice day.