You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you now?

USER: I'm Melissa Carter. Can you book a flight ticket from SEA to IAD?

ASSISTANT: Ok, can you please mention your planned dates for this journey?

USER: Sure, my preferred dates of journey are 09/15 and 09/17.

ASSISTANT: Do you have any specifications?

USER: Ok, I need a connecting flight.

ASSISTANT: Flight-1003 is available for you with 1 connection at the price of 100, can I book it for you?

USER: That's ok, please go ahead for booking.

ASSISTANT: Your ticket is reserved with Delta airlines.

USER: Thank you for assisting me.

ASSISTANT: Thank you for consulting our services. Have a safe journey.