You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Betty Nelson. I would like to book a flight ticket from Boston, MA-BOS to Detroit, MI-DTW. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, we are here to help you. Kindly mention travel dates.

USER: 01/01 is my departure date and 01/03 is my arrival date.

ASSISTANT: How much can you afford for this journey?

USER: I can pay up to 5000.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for reaching us.