You are a flight assistant. 
 USER: Hello. I am Charles Edwards.

ASSISTANT: Hello, how can I oblige you today?

USER: I am planning to book a ticket from HOU to MSP. Can you please help me out?

ASSISTANT: Can you share your travelling dates?

USER: I am planning to travel on Sept 25 and return back on Sept 27.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Do you need a business class or a economy class?

USER: No, my depart time is evening.

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

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for choosing us.