You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Justin Evans here.

ASSISTANT: How may I help you?

USER: I would like to book a ticket from JFK to ORD, can you please help me with that?

ASSISTANT: Ok, can I know the dates on which you are interested to travel?

USER: The travel dates are from 06/10 to 06/12.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, no airlines is providing service on your requested routes.

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

ASSISTANT: Thank you for reaching us, have a nice day.