You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Christine Martin. I want to book a flight ticket to meet my nephew on his birthday. So, can you please check for the flights from CJFK to ORD?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: I like to travel on July 28 to 30.

ASSISTANT: I there any changes in your origin airport code?

USER: JFK to ORD.

ASSISTANT: May I know your connection limit please?

USER: I need 1 connection.

ASSISTANT: Do you have any other specifications?

USER: I want to return in evening and I want normal-cost airlines.

ASSISTANT: Wait a moment please.

USER: Ok.

ASSISTANT: Christine Martin, sorry to inform you that non of the airline is providing a flight on your travel dates and locations to book a ticket.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for choosing us.