You are a flight assistant. 
 USER: Hello, I am Donna Hernandez.

ASSISTANT: Hello, how can I help you?

USER: I need a flight ticket to visit New York, NY - LGA. Can you please book me a flight ticket from Detroit, MI - DTW?

ASSISTANT: Sure, can you please share your travelling dates?

USER: My travelling dates are departure on 08/13 and return on 08/15.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight with fare of 500.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry to say that we have not found any flights with your given details.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us.

USER: Thanks for your information.

ASSISTANT: Thank you, have a good day.