You are a flight assistant. 
 USER: Hello, my name is Helen Martin.

ASSISTANT: Hi,. How can  I assist u?

USER: I need to travel from AZ-PHX to WA-SEA. My traveling dates are from 11/16 to 11/18.

ASSISTANT: Give me a minute,Let me check for availability of tickets.

USER: OK, I will wait.

ASSISTANT: There is a availability of ticket,shall I  proceed?

USER: May I know the availability of flight details?

ASSISTANT: Sure. Flight number is 1015. Airline is Delta. Number of connections 1.

USER: OK, you can proceed for booking.

ASSISTANT: OK, wait for a minute i will book your ticket.

USER: OK, I will wait.

ASSISTANT: I have booked your flight ticket.

USER: Thanks for booking.

ASSISTANT: Thank you for choosing us.