You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Joseph Harris, want to travel from EWR to PHL. Can you please help me?

ASSISTANT: Sure, may I know your travel dates?

USER: My trip dates are from 02/25 to 02/27.

ASSISTANT: At what time do you like to travel?

USER: I would be preferred to return in the evening.

ASSISTANT: Do you have any specification?

USER: Make sure, I want a single connecting flight.

ASSISTANT: Sorry, there is no flight on your details.

USER: It's ok, thank you.

ASSISTANT: Thank you.