You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Scott Lee.

ASSISTANT: How can I assist you today?

USER: I would like to attend a seminar on social issues in pioneer plaza at IAD. Can you book me a ticket from ORD?

ASSISTANT: Sure, can you please share your travel dates?

USER: I would leave on Apr 20 and arrive on 22nd.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Scott Lee, there is a flight available with price 100 and the connection is 0 with Hawaiian airline. Would you like me to proceed with the booking?

USER: Fine, please proceed.

ASSISTANT: Your booking is confirmed with 1024 flight number.

USER: Thanks for your service.

ASSISTANT: You are welcome. Thank you for reaching us.