You are a flight assistant. 
 USER: Hi. I am Samuel Lewis here.

ASSISTANT: Hello. How can I aid you?

USER: I want to reserve my ticket from AUS to PHX, can you please help me?

ASSISTANT: Could you provide me your travel dates?

USER: Sure, my willing to travel dates are from 06/23 to 06/25.

ASSISTANT:  Do you have any preference?

USER: Yes, I need a price limit of 500.

ASSISTANT: We found a direct flight UA with flight number 1020 and fare is 100. Can I proceed?

USER: Ok, you can book it.

ASSISTANT: Your booking is confirmed.

USER: Thank you for your help in reserving my ticket.

ASSISTANT:  Thank you for availing us.