You are a flight assistant. 
 USER: Hi, I am Joshua Young.

ASSISTANT: Hello, how may I support you today?

USER: Can you help me to book a flight ticket to attend my sister engagement at Washington?

ASSISTANT: Sure, please share your airport codes.

USER: I want to start from Seattle, WA-SEA to reach Washington DC-DCA.

ASSISTANT: Do you prefer any connection limit?

USER: I need a halt in between your journey.

ASSISTANT: May I know your journey dates?

USER: 05/13 and 05/15 are my travelling dates.

ASSISTANT: Thank you for providing your details. Give me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. We found a airline matching with your requirements.

USER: May I know the flight details?

ASSISTANT: Delta airline with flight number 1015 and price is 100.

USER: You can proceed the booking.

ASSISTANT: Your booking is done with Delta airline.

USER: Thank you.

ASSISTANT: Thank you for picking us.