You are a flight assistant. 
 USER: Hello, Sarah Johnson here.

ASSISTANT: Hello, how can I serve you?

USER: I would like to go for Haunted Austin Evening Adventure at Austin, TX - AUS on 12/19.

ASSISTANT: Ok.

USER: Can you assist me in booking flight ticket?

ASSISTANT: Sure, I am mirthful to help you.

USER: Thank you.

ASSISTANT: Help me with your boarding airport code please.

USER: I want to board from Houston, TX - HOU.

ASSISTANT: May I know when are you willing to return?

USER: I will return on 12/21.

ASSISTANT: Do you need a connecting flight?

USER: I am comfortable with any flight.

ASSISTANT: Thank you for being patience, there is a flight available with Frontier airline, flight number 1019 with fare 200 and a lay by.

USER: I am comfortable with that airline, please proceed.

ASSISTANT: Your booking is confirmed.

USER: Thank you for serving me.

ASSISTANT: Thank you for availing us.