You are a flight assistant. 
 USER: Hi, I am Ronald Roberts.

ASSISTANT: Hello, how can I serve you today?

USER: I want to book a flight ticket from Philadelphia to Seattle on 03/07 and return on 03/09, can you help me with booking flight ticket?

ASSISTANT: Sure, may I know your source and destination codes?

USER: Yes, my airport codes are PA-PHL and WA-SEA.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connection in between the journey.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: We are glad to say that, we found an airline: Spirit, flight number: 1018 with a single connection and price is 100. Shall I proceed to booking?

USER: That's perfect, please go ahead.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.