You are a flight assistant. 
 USER: Hello. I am Emma Turner.

ASSISTANT: Hello, How can I serve you?

USER: I would like to visit the Whitney Museum of American Art at New York, so can you book a ticket on 02/18?

ASSISTANT: Sure. May I know your return date?

USER: I need to catch a return flight on 02/20.

ASSISTANT: Can you share me your airport codes?

USER: My journey starts from Detroit, DTW.

ASSISTANT: Do you have any preferences?

USER: Make sure to check a flight with in a price limit of 200.

ASSISTANT: Can you share me your destination airport code?

USER: New York airport code is LGA.

ASSISTANT: Thanks for your details.

USER: Ok.

ASSISTANT: There are no flights found on your data.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you.