You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Kathleen Campbell.

ASSISTANT: How may I assist you today?

USER: I would like to visit Chicago, can you help me for booking a flight ticket?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your planning dates of journey?

USER: My departure date is 07/22 and my return date is on 07/24.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: My travelling airport codes are from JFK to ORD.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no flights are available on your route.

USER: That's ok, thank you for your information.

ASSISTANT: Welcome, have a nice day.