You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I would like to spend my weekend at Philadelphia, please help me in booking a ticket from DCA to PHL.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can you please share your planned journey dates?

USER: My planned journey dates are on Aug 24 and Aug 26.

ASSISTANT: May I know your name?

USER: My name is Mark Hall.

ASSISTANT: Let me know your connection preference.

USER: I need a flight with single connection.

ASSISTANT: Which airline would you prefer for your journey?

USER: Any airline is comfortable for me.

ASSISTANT: Do you have any other requirements?

USER: No more requirements.

ASSISTANT: Hold on a minute, I will search for a flight on your route.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, there is a flight available with fare 100 and single connection in Delta airline having 1002 as flight number. May I confirm it?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been reserved in economy class.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.