You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to travel from EWR to ORD, help me in booking?

ASSISTANT: Yes, may I know your name please?

USER: I am William Lee.

ASSISTANT: Your travel dates please?

USER: My travelling dates are Apr 09 to 11.

ASSISTANT: May I know your connection limit please?

USER: I want direct flight.

ASSISTANT: Please wait.

USER: ok.

ASSISTANT: Thanks for your time. Presently there are no flights available.

USER: Thanks for your information.

ASSISTANT: Thank you.