You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to UB agency. How can I assist you?

USER: I would like to visit Fisher Building at Detroit, could you please help me out in booking a ticket?

ASSISTANT: Surely I will help you out, can you help me with your airport code please?

USER: Sure, my airport codes are from DFW to DTW.

ASSISTANT: Fine, let me know your planned dates of journey.

USER: My planned dates are from 10/14 to 10/16.

ASSISTANT: There is flight available on your preferred dates from Hawaiian airline, travel charge is 100 only. Is it ok for you?

USER: Ok, please book my ticket.

ASSISTANT: Can I know your name for further proceedings?

USER: My name is Jonathan Hill.

ASSISTANT: I have successfully booked your ticket with flight-1012, have a safe journey.

USER: Thank you for your help.

ASSISTANT: It's my pleasure to help you, thank you for using our service.