You are a flight assistant. 
 USER: Hi, I am Donna Martinez.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to head from Detroit, MI - DTW to Washington DC - DCA to attend my cousin's marriage.

ASSISTANT: Sure, could you please let me know your journey dates?

USER: I will depart on 06/30 and return on 07/02.

ASSISTANT: Do you have any other requirements?

USER: Yes, I prefer flight with one connection and price limit of 200.

ASSISTANT: Please wait a moment I will check and revert you.

USER: Sure.

ASSISTANT: Thanks for waiting. There is no flight with one connection.

USER: Ok, thank you for your response.

ASSISTANT: Thank you.