You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to travel from Philadelphia PA-PHL to Seattle WA-SEA.

ASSISTANT: Ok, may I know your travelling dates to proceed?

USER: My depart is on 09/23 and returning 09/25.

ASSISTANT: Ok, let me check what flights are available for you.

USER: OK.

ASSISTANT: We have an Delta airline with flight number 1026 and price of 200 available  matching your request. May I know your name to proceed with booking?

USER: I am Paul Williams.

ASSISTANT: Your booking is confirmed. Thank you for reaching us.