You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Sarah Anderson.

ASSISTANT: How may I assist you?

USER: Will you please book my return ticket on 05/20?

ASSISTANT: Sure. Please provide travelling airport codes?

USER: Sure. I planned to have dinner with my fiance at Bellagio in Las Vegas, LAS. so, I will start from Orlando, MCO.

ASSISTANT: Please specify departure date?

USER: I will board at Orlando on 05/18.

ASSISTANT: Ticket can be booked with airline Hawaiian, price is 100.

USER: Ok, you can confirm.

ASSISTANT: Flight connections is 1 with number 1011. Ticket is booked.

USER: Thank you.

ASSISTANT: Thanks.