You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you help me booking a flight ticket from EWR to LGA?

ASSISTANT: Sure, I am here to help you for this. When are you planning your trip?

USER: I will start on 07/27 and return on 07/29.

ASSISTANT: May I know your name please?

USER: I am Patricia Robinson.

ASSISTANT: Do you have any specifications regarding your journey?

USER: I need to return in the afternoon time.

ASSISTANT: Is there any other criteria?

USER: No.

ASSISTANT: Sorry to inform you, no flights are found with your specifications.

USER: No problem, thank you for the information.

ASSISTANT: Thank you very much for approaching our agency.