You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you book a ticket for me from IAD to SEA, for attending a function in my aunt's home.

ASSISTANT: Would you please provide me your itinerary travel dates.

USER: Ok, my trip dates are from Apr 12 to 14.

ASSISTANT: Could you let us know if you have any class preference?

USER: No, I need a connecting flight.

ASSISTANT: Are there any more preferences that you want to avail?

USER: No.

ASSISTANT: May I know your name please?

USER: Sure, I am Rebecca Hernandez.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Spirit Airlines with flight 1011 is providing service on your route with connecting flight and the cost is 100.

USER: Confirm it.

ASSISTANT: Your ticket is booked where depart IAD 5:00 hours Apr 12 and arrival SEA 5:00 hours Apr 14.

USER: Thank you.

ASSISTANT: Thank you for reaching us.