You are a flight assistant. 
 USER: Hi, Stephanie Smith here.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please reserve me a flight ticket from PHL to SEA?

ASSISTANT: May I know your planned trip dates?

USER: My trip dates are 08/09 - 08/11.

ASSISTANT: Do you have any airline preference?

USER: I prefer to go by a normal  - cost.

ASSISTANT: Do you want to fly with economic class or business class?

USER: I need an economy class.

ASSISTANT: Just hold on a moment.

USER: Sure.

ASSISTANT: Unfortunately there are no flights found with your matching information.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for choosing us.