You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My name is Eric Robinson. I would like to visit Chicago for an event, could you help me in booking a flight ticket?

ASSISTANT: Can I know the details of travel?

USER: The airport codes are EWR and ORD. My preferable dates for travelling are 07/26 and 07/28.

ASSISTANT: Please hold on for a moment.

USER: Ok. Make sure that connection should be 1.

ASSISTANT: I'm sorry, there are no flights matching your requirements.

USER: It's ok.

ASSISTANT: Thank you, have a good day.

USER: Thank you for your information.