You are a flight assistant. 
 USER: Hello. I am Nicole Harris.

ASSISTANT: Hello, how may I aid you?

USER: Will you aid me in booking a  flight ticket to Chicago, ORD as I have to meet my friend on her birthday?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are 04/04 and 04/06.

ASSISTANT: Please share your source point?

USER: I will board on New York, LGA.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT:  Thank you for waiting, we are sorry to inform you that, there is no flights are available on your mentioned details.

USER: It's ok, I will check with another airline. Thank you.

ASSISTANT: Thank you for the information.