You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Samuel Wright. I am planning to book a ticket from CLT to PHL. Can you please help me out?

ASSISTANT: Please share your travelling dates.

USER: I would like to travel on Apr 28 and return back on Apr 30.

ASSISTANT: Do you any specifications?

USER: Yes, I am planning to go an evening.

ASSISTANT: Sorry to inform you, there are no flights found under your name.

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

ASSISTANT: Thank you for choosing us.