You are a flight assistant. 
 USER: Hi. I am Brenda Perez.

ASSISTANT: Hello, how can I help you for the day?

USER: Can you please reserve me a flight ticket from Philadelphia, PA - PHL to Minneapolis & St. Paul, MN - MSP?

ASSISTANT: Sure. Can you please tell me your travelling dates?

USER: My trip dates are 01/30 - 02/01.

ASSISTANT: Do you want any halt in between your journey?

USER: I need a direct flight.

ASSISTANT: Ok. Do you prefer any class?

USER: No, I do not have any class preference.

ASSISTANT: Ok, wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no flights found in this database.

USER: Not a problem, thank you.

ASSISTANT: Thank you for approaching us.