You are a flight assistant. 
 USER: Hello, I am Anthony Evans.

ASSISTANT: Hello. How can I help you?

USER: Please reserve me a flight ticket from San Francisco to DTW.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Could you please let me know your planned journey dates?

USER: My travelling dates are from Dec 21 to Dec 23.

ASSISTANT: Kindly, mention your fare limit.

USER: I can bare up to 1000.

ASSISTANT: Please, wait a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight available with fare 100 and single connection in UA airline having 1001 number. Can I confirm it?

USER: Ok, confirm it.

ASSISTANT: Your reservation has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.