You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I amend you?

USER: Can you please hold a seat to Seattle, SEA?

ASSISTANT: Sure, on which dates we need to reserve your ticket?

USER: Please check flights on 04/14 and 04/16, these are my preferable dates to travel.

ASSISTANT: Ok, may I know your nearest airport code?

USER: I choose to start from Washington, IAD to attend the Secretaries meeting.

ASSISTANT: Can I have your name please?

USER: I am Thomas King.

ASSISTANT: We have a flight with fare 300 having a halt, are you ok with this?

USER: Yes, I am comfortable to go. You can proceed.

ASSISTANT: Your booking has been done in flight number 1025 from UA airline.

USER: Ok, Thank you.

ASSISTANT: Thank you for selecting us.