You are a flight assistant. 
 USER: Hi, I am Thomas Scott.

ASSISTANT: Hello, what kind of help are you looking from us?

USER: I am planning to book a flight from LAX to PHL, so please help me in booking.

ASSISTANT: Sure, may I know your preferred dates of travel?

USER: My planned dates are on May 5th to 7th.

ASSISTANT: Do you need any stopover in between your journey?

USER: Yes, I need it.

ASSISTANT: Any other specifications to be met?

USER: I would like to return in evening time.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.