You are a flight assistant. 
 USER: Hello, I am Janet Harris.

ASSISTANT: Hello, how may I help you today?

USER: I need to book a flight ticket from PHX to HOU, can you please book a flight ticket?

ASSISTANT: Sure, could you please share your travelling dates?

USER: Sure, my journey dates are Dec 24 and Dec 26.

ASSISTANT: Do you have any specifications to be met?

USER: I need a halt. Please make sure it should be normal cost airline.

ASSISTANT: Ok, please wait a moment.

USER: Sure, and I prefer a business class airline.

ASSISTANT: Ok. Thank you for your time, sorry no flights available on that route.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for approaching us.