You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to book a connecting flight ticket to take a part in an cultural fest at CO. Can you help me?

ASSISTANT: Sure, May I know your travelling dates?

USER: Thank you. 07/28 and 07/30 are my travelling dates.

ASSISTANT: Can you share me your airport codes?

USER: DTW and DEN  are my airport codes.

ASSISTANT: Do you have any airline preference?

USER: I need a normal-cost airline.

ASSISTANT: May I know your name?

USER: I am Samantha Lee.

ASSISTANT: Thanks for your details, there are no flights found on your data.

USER: No issue. Thank you for the information.

ASSISTANT: Thank you.