You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am planning to visit Millennium Park at Chicago, could you please help me with booking a flight ticket from DCA to ORD?

ASSISTANT: Sure, can you please share your preferable journey dates?

USER: I would like to depart on Dec 12th and return on Dec 14th.

ASSISTANT: May I know your name please?

USER: I am Michelle Anderson.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Is there any other specifications?

USER: I have no other specifications.

ASSISTANT: I found a ticket for you with price of 100, flight number is 1018 in economy class and connection is 1.

USER: Please confirm the booking.

ASSISTANT: I confirmed your ticket successfully.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for reaching us.