You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can you please tell me how can I serve you?

USER: My name is Stephen Baker.

ASSISTANT: Ok.

USER: I am planning to attend a event in Washington, can you help me for booking?

ASSISTANT: Ok, may I know your travel dates?

USER: I would like to start my journey on 11/19 and return on 11/21.

ASSISTANT: May I know your travel codes?

USER: My airport codes are DTW and IAD.

ASSISTANT: Do you want any connection limit?

USER: Make sure that my connection limit should be 1.

ASSISTANT: Sorry Baker, no flights found with 1 connection limit.

USER: That's ok, thank you for checking.