You are a flight assistant. 
 USER: Hello, I am Susan Robinson.

ASSISTANT: Hello, how can I help you?

USER: I am planning to attend my family function at Washington DC - DCA, can you please help me to book a flight ticket from PHL?

ASSISTANT: Sure, please share me your travelling dates?

USER: The trip dates are 10/23 to 10/25.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight. My price is 500.

ASSISTANT: Thanks for your details, we found 1004 UA airline with single connection and price of 100.

USER: Yes, you can proceed.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.