You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Angela Roberts. I would like to travel from LAS to HOU.

ASSISTANT: Sure. Please tell me your travel dates.

USER: I prefer to go on 11/20 and return on 11/22.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Angela, there is a flight available with Frontier airlines.

USER: Ok.

ASSISTANT: Would you like me to confirm?

USER: Please book the ticket for me.

ASSISTANT: Sure. Your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you.