You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I help you?

USER: I am Raymond Hernandez. I want to go for a film festival at Houston, TX - IAH. Can you please book a ticket on 10/21?

ASSISTANT: Ok. Please provide your boarding airport code?

USER: My origin is Austin, TX - AUS.

ASSISTANT: Please specify return date?

USER: I need to return on 10/23.

ASSISTANT: Connecting flight 1018 can be booked with airline Frontier, price is 100. Shall I book ticket?

USER: Please proceed.

ASSISTANT: Your ticket is booked.

USER: Thanks for your service.

ASSISTANT: Thanks.