You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Could you please book a flight ticket from ORD to IAD as I want to attend a live music concert?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My planned travel dates are Dec 09 and Dec 11.

ASSISTANT: Do you have any specifications?

USER: I prefer to travel in normal cost airline.

ASSISTANT: May I know the connection limit?

USER: And I need a connecting flight.

ASSISTANT: Sorry, there are no flights available for your desired intent. Please provide me the name for documentation.

USER: My name is Brenda Anderson.

ASSISTANT: Thank you for reaching us.

USER: Thank you.