You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in booking a flight ticket from Phoenix, PHX to reach Houston, HOU?

ASSISTANT: Sure, let me know your travelling dates.

USER: My journey dates are from June 27 to June 29.

ASSISTANT: Do you want connecting flight or direct flight?

USER: I prefer to travel in direct flight.

ASSISTANT: Please share your class preference.

USER: I am comfortable with any class.

ASSISTANT: Is there any other requirements?

USER: No, thanks for asking.

ASSISTANT: May I know your name?

USER: My name is Scott Harris.

ASSISTANT: Sorry, there are no flights found based on your details.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.