You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for today?

USER: I am Frank Walker. I would like to book a ticket to Phoenix, can you please help me out?

ASSISTANT: I am here to help you about your flight ticket booking. Can you please provide your planned dates of journey?

USER: I am travelling on these dates 12/08 and 12/10.

ASSISTANT: Please specify your origin and destination airport codes.

USER: I am flying from DCA to PHX.

ASSISTANT: There is a flight which costs 100 which is provided by Spirit airline in the flight 1021 having a single connected flight. Would you like to book this flight for your journey?

USER: Ok, you can proceed with this flight.

ASSISTANT: I have booked your flight ticket in economy class. Have a safe journey.

USER: Thank you for your services.

ASSISTANT: My pleasure, thank you for choosing our service.