You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: Is it possible for you to book a flight from PHL tp JFK?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: I will be travelling on June 23rd and 25th.

ASSISTANT: Do you need any break?

USER: I am fine with a connecting flight.

ASSISTANT: Is there any specifications?

USER: I am looking for a normal-cost airline.

ASSISTANT: May I know your name?

USER: My name is Carol Hall.

ASSISTANT: Give me a minute.

USER: Please note I prefer to fly in business class.

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

USER: No worries, thank you for the information.

ASSISTANT: Thank you for choosing  us.