You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Anna Martinez. Can you please help me with booking a flight ticket to Detroit with price under 5000?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are 10/29 and return on 10/31.

ASSISTANT: Could you please mention your airport codes?

USER: My travelling airport codes are DEN and DTW.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with your requirement, airline is Frontier with price 100 and single connection.

USER: You can proceed with booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thanks for opting us.