You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Will you please assist  me in booking a flight ticket to IAD from ORD to meet my friend on her birthday?

ASSISTANT: When you are willing to travel?

USER: I am willing to depart on Aug 16 and return on Aug 18.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a flight with single connection.

ASSISTANT: May. I know your good name?

USER: I am Karen Adams.

ASSISTANT: We found 1017 Spirit airlines with single connection with price 100.

USER: Please, proceed with booking.

ASSISTANT: Your, booking has been confirmed.

USER: Thank you for assisting me.

ASSISTANT: Thank you for reaching us.