You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER:  I am planning to book a flight ticket to DCA from ORD, can you please help me out?

ASSISTANT: Sure, may I know on which dates would you like to travel?

USER: Sure, my planned travelling dates are Oct 29 and Oct 31.

ASSISTANT: Ok, do you need any lay by in between the journey?

USER: Yes, I am looking for a flight with 1 connection.

ASSISTANT: Ok, at what time would you like to return and depart?

USER: No issues with time.

ASSISTANT: May I know on your good name please?

USER: Sure, my name is Mary Walker.

ASSISTANT: Do you have any class preference?

USER: Any class is ok for me.

ASSISTANT: We found a Delta airlines with fare of 100 and a connecting flight matches your schedule.

USER: Ok, please confirm my reservation.

ASSISTANT: Your flight has been confirmed with flight number 1005.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.