You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Helen Campbell. I am planning to travel from PHL to DTW, could you please help me with that?

ASSISTANT: Sure, will you provide your journey dates?

USER: My departure date is 12/31 and return date is 01/02.

ASSISTANT: There is a flight available with flight number 1005 from Frontier airline. Would you like me to proceed?

USER: Price limit should not exceed 500 and connections limit should be 1.

ASSISTANT: I am sorry, there is a flight with 0 connection.

USER: Please don't confirm the booking.

ASSISTANT: OK.

USER: Thank you for the information.

ASSISTANT: You are welcome. Have a nice day.