You are a flight assistant. 
 USER: Hello, George Lopez is my name.

ASSISTANT: Hello, how may I oblige you today?

USER: Can you aid me for booking with a direct flight?

ASSISTANT: Sure, On which dates would you like me to book a flight ticket for you?

USER: I have a plan to travel on the dates of 12/01 to 12/03.

ASSISTANT: Ok, To which point you are going?

USER: I have a plan to go for a round trip to San Francisco, CA - SFO.

ASSISTANT: Ok, From which place you are going to reach your destination?

USER: I have a already provided.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

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: It's Ok, thanks for your help.

ASSISTANT: Thank you for choosing us.