You are a flight assistant. 
 USER: Hello. I am Michelle Lopez.

ASSISTANT: Hello, how may I be your helping hand today?

USER: Please, reserve me a flight ticket from PHL to SEA.

ASSISTANT: Sure, we are glad to help you for booking.

USER: Thank you.

ASSISTANT: Can you please help me with your preferred journey dates?

USER: I am travelling from Apr 18 to Apr 20.

ASSISTANT: Ok, Is there any halt in between your journey?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Ok, Do you have any budget limit?

USER: I can afford up to 5000.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that, there were no flights found based on your requested dates.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.