You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am looking for a flight ticket on the route from LAS to PHX, can you please search for it?

ASSISTANT: Sure, I will help you, please give the dates you want to travel?

USER: My preferable dates are from 01/19 to 01/21.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: There is a flight available with Delta airlines, can you please help me?

USER: Ok, please book it.

ASSISTANT: Can I know your good name?

USER: Sure, I am Jonathan Williams.

ASSISTANT: Your ticket is booked, flight number is 1009.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.