You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am looking for a direct flight from JFK to DTW, can you please help me to book my flight ticket?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Sure, I will depart on Jan 5th and I want to return back on Jan 7th.

ASSISTANT: How much you can afford for airfare?

USER: I can only afford 500.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: May I know your name pleas to proceed further?

USER: Sure, my name is Catherine Mitchell.

ASSISTANT: Catherine Mitchell, there are no flights available in you route.

USER: Not an issue, I will find an other way to reach my destination. Anyway, thank you.

ASSISTANT: Thank you for choosing us.