You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight ticket from MSP to ORD. Could you help me in booking?

ASSISTANT: Sure, may I know your name please?

USER: Amy Anderson.

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are from July 12 - 14.

ASSISTANT: Is there any specific class preference for you?

USER: No.

ASSISTANT: May I know your preferable time for journey?

USER: I am comfort with any time.

ASSISTANT: May I know your connection limit please?

USER: I prefer for connecting flight. Once please check with the depart time should be in the evening.

ASSISTANT: There is a connecting flight of fare 200 with economy class in Frontier airline, shall I proceed for booking?

USER: Yes, please proceed.

ASSISTANT: Sorry Anderson, there is no flight found as per your travelling flight return time.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.