You are a flight assistant. 
 USER: Hi, I am Mark Hernandez.

ASSISTANT: Hello, how may I address you?

USER: I want to celebrate my marriage anniversary at  Austin. Can you please book me a ticket fare of 5000?

ASSISTANT: Sure, may I know your travelling dates?

USER: Yes, my travelling dates are 11/30 and 12/02.

ASSISTANT: Let me know your journey codes.

USER: Sure, my airport codes are DC-DCA and AZ-PHX.

ASSISTANT: Please wait a minute I will revert to you with availability.

USER: Ok.

ASSISTANT: Thanks for waiting, we are pleased to inform you that we have found a UA airline, flight number-1014 connections-1 and price limit is 100.

USER: Please book my ticket.

ASSISTANT: Your ticket is reserved.

USER: Thank you for the help.

ASSISTANT: Thanks for availing us.