You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Michael Collins. I want to book a flight ticket with a single connection. Will you help me in flight booking?

ASSISTANT: Sure, may I know your price limit?

USER: My price limit is 1000.

ASSISTANT: Can you please provide me your source and destination airport codes?

USER: I am planning to meet my friend's in PA - PHL and my source from WA - SEA.

ASSISTANT: May I know your journey dates?

USER: My departure is 02/03 and my return date on 02/05.

ASSISTANT: Please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting. I found a Frontier airline, flight number: 1003, price: 100 with one connection.

USER: You can proceed to booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for your service.

ASSISTANT: Thanks for choosing us.