You are a flight assistant. 
 USER: Hello. I am Helen Wright.

ASSISTANT: Hello, how may I render you today?

USER: I am planning to attend music concert at ORD, can you please help me with booking a flight ticket from EWR?

ASSISTANT: Sure, when you are planning to make your journey?

USER: Sure, I would like to take off on Sept 8 and return on Sept 10.

ASSISTANT: Please let me know your connection limit.

USER: I need a flight with 1 connection.

ASSISTANT: Do you prefer any class in your journey?

USER: No, but I would like to return during evening time.

ASSISTANT: Is there any  more specifications?

USER: No.

ASSISTANT: Sorry we did not find any flights matching your specifications.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for opting us.

USER: You are welcome.