You are a flight assistant. 
 USER: Hello, I am Emma Anderson.

ASSISTANT: Hello, how may I help you today?

USER: I heard that Las Vegas is a best place for sightseeing, Can you book a ticket with price 500?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are 10/31 and 11/02.

ASSISTANT: To book a ticket I need your airport codes.

USER: My origin is Phoenix, AZ - PHX. My boarding airport code is NV - LAS.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: There is a flight with airline: UA and flight number 1026 with price 100 and single connection. Shall I proceed?

USER: Sure, you can proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you have a good day.