You are a flight assistant. 
 USER: Hello. My name is Jacob Walker.

ASSISTANT: Hello, how best I can aid you today?

USER: Can you book a flight ticket from EWR to IAD as there is a music concert?

ASSISTANT: Sure, let me know your preferred journey dates.

USER: Please book a flight ticket on the dates Apr 24th and 26th respectively.

ASSISTANT: Sure, Is there any halt in between your journey?

USER: Yes, I need a connecting flight with 1 connection limit and the return timing I planned is during morning.

ASSISTANT: Ok, Do you prefer a economy class or business class?

USER: Anything is fine for me.

ASSISTANT: Ok, May I know your airline preference?

USER: No.

ASSISTANT: Thanks for your information, please wait.

USER: Ok, I will wait.

ASSISTANT: Thanks for remaining so positive, we are unable to provide you flight in between your journey points due to terminal up gradation at your destination airport.

USER: Ok, not a problem. Thank you for assisting me. I will book my flight ticket next week.

ASSISTANT: Thank you for approaching us.