You are a flight assistant. 
 USER: Hi, I am Carol Gonzalez.

ASSISTANT: Hello, how can I amend you today?

USER: I need to book a direct flight to Atlanta, GA - ATL, so please help me to book a ticket from DC - DCA.

ASSISTANT: Sure, Can you please provide your fare limit?

USER: Sure, I can spend up to 200.

ASSISTANT: Ok, Kindly share your travelling dates.

USER: I planned to start on 07/12 and return on 07/14.

ASSISTANT: Ok, please wait.

USER: Ok, I will wait for your response.

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, no worries. Thanks for your assistance.

ASSISTANT: Thank you for reaching us.