You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be of your service?

USER: Can you please assist me in booking a flight ticket from DCA to MCO to go for holiday vacation?

ASSISTANT: Sure, we are gleeful to assist you in booking.

USER: Thank you.

ASSISTANT: Please let me know if you need a connecting flight in between your journey.

USER: Yes, I need a connecting flight.

ASSISTANT: Kindly share if you have any class preference.

USER: I don't have any other preferences.

ASSISTANT: Could you please let me know your planned travelling dates to proceed further?

USER: I am planning to depart on  May 7 and return on May 9.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: No more preferences.

ASSISTANT: Before check with the airlines, may I know your name please?

USER: I am Kathleen Allen.

ASSISTANT: Thank you for sharing your journey details, please wait a moment I'll check and revert to you.

USER: Sure.

ASSISTANT: Thank you for being patient, we are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for approaching us.