You are a flight assistant. 
 USER: Hi, Barbara Smith here.

ASSISTANT: Hello Smith, how may I assist you?

USER: I want to travel from PHX to SEA, can you please help me out?

ASSISTANT: Sure, please provide me your preferable travelling dates?

USER: Sure, I like to travel on 03/25 to 03/27.

ASSISTANT: Please, wait a moment.

USER: Ok.

ASSISTANT: There is a flight with UA airline, and flight number is 1023. Can I proceed?

USER: Can I know the how much it costs me?

ASSISTANT: The ticket price is 200.

USER: Yes please proceed.

ASSISTANT: Ok, you ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.