You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I oblige you today?

USER: I have a plan to attend story telling festival in PHL, can you please assist me in booking a flight ticket from DFW?

ASSISTANT: Sure, we are here to help you. When do you want to start and return on?

USER: I want to start my journey on May 30 and return on June 1st.

ASSISTANT: Do you need a stopover flight?

USER: Yes, I need a stopover.

ASSISTANT: Do you have any other specifications?

USER: The return time should be afternoon.

ASSISTANT: Can I know your good name?

USER: Rachel Campbell.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for opting us.