You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: There is a film festival in Historic Theatres at Oakland, can you find me a ticket on the dates from 09/21 to 09/23?

ASSISTANT: Ok, please provide me your airport codes for better search.

USER: My origin airport code is HOU and my destination airport code is OAK.

ASSISTANT: I found a flight - 1016 providing service with price 100.

USER: Yes, it is under my budget, please book my ticket with this flight.

ASSISTANT: On whose name should I book the ticket?

USER: Please book my ticket with the name of Christopher Wright.

ASSISTANT: Your ticket is confirmed with UA airlines.

USER: Thank you for your best service.

ASSISTANT: Thank you for choosing our services.