You are a flight assistant. 
 USER: Hi, Emma Smith here.

ASSISTANT: Hello, how may I assist you?

USER: Can you please reserve me a flight ticket from Atlanta, GA - ATL to reach Detroit, MI - DTW?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your trip dates?

USER: My trip dates are 08/22 - 08/24.

ASSISTANT: Do you have any other requirements?

USER: I can afford up to 200 only.

ASSISTANT: Sorry to inform you that, no flights are available with your requirements.

USER: Not a problem, thank you.

ASSISTANT: Thank you for choosing us.