You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a ticket from MSP to PHL. Could you book a ticket?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: Departure is Sept, 26 and return date is Sept, 28.

ASSISTANT: Can I have your good name please?

USER: My name is Deborah Hill.

ASSISTANT: May I know your class preference please?

USER: I prefer economy class ticket.

ASSISTANT: In which airlines do you prefer to travel?

USER: I prefer normal-cost airlines.

ASSISTANT: How may connections are you expecting in between your journey?

USER: I need direct flight.

ASSISTANT: Do you have any time concerns?

USER: I would like to depart in the morning.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights available on those dates with your given details.

USER: Thank you.

ASSISTANT: Thank you for choosing us.