You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I would like to book a ticket from PHL to IAD, can you please help me with that?

ASSISTANT: Sure, I am here to help you out. May I know your travel dates please?

USER: The travel dates are from 05/11 to 05/13.

ASSISTANT: Can you please share your name for documentation purpose?

USER: Kimberly Scott here.

ASSISTANT: Is there any connection preference?

USER: I need a direct flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Kimberly Scott, there are no flights available in your route.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for choosing us.