You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Myself Katherine Thompson. I want to go Washington for my film shooting purpose. Can you please book a flight ticket from Detroit?

ASSISTANT: Sure, may I know your airport codes please?

USER: I want to fly from DTW airport and destination airport is IAD.

ASSISTANT: Ok, now please tell me your travel dates?

USER: My departure date is 04/18 and please book my return ticket also on 04/20.

ASSISTANT: Thanks for waiting, I have found AA airlines which flies with one connection.

USER: I am ok with this airline, please proceed.

ASSISTANT: Sure, your flight ticket has been confirmed now.

USER: Thank you for your help.

ASSISTANT: Thank you.