You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what kind of service your looking for?

USER: I would like to book a flight ticket to Phoenix,  PHX to attend board meeting with my company authorities. Can you help me in this?

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates are 07/31 - 08/02.

ASSISTANT: Is there any class preferences for you?

USER: I want to fly in a normal - cost airlines. I do not have any class preferences.

ASSISTANT: May I know your connection limit?

USER: I prefer a single connection.

ASSISTANT: Please share me your source airport code.

USER: My origin airport code is HOU.

ASSISTANT:  For booking, we need your good name. Please mention it.

USER: I am Virginia Moore.

ASSISTANT: We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.