You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I'm planning to participate in seafood festival, can you please book the ticket from DTW to IAH?

ASSISTANT: Sure, let me know your travelling dates.

USER: Sure, I would like to depart from my source location on 2nd and 4th of March.

ASSISTANT: May I know your connection limit?

USER: I prefer single connected flight to travel.

ASSISTANT: Do you have any other requirements?

USER: I prefer major airlines to travel.

ASSISTANT: May I know your name please?

USER: My name is Elizabeth Thomas.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, I'll wait for your response.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Oh! That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for opting us.