You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I provide service to you?

USER: I need to celebrate Christmas with my family members at Washington, DC - DCA. Can you help me with booking ticket from Atlanta, GA - ATL?

ASSISTANT: Sure, we are gleeful to assist you. Could you please provide your journey dates?

USER: 12/23 and 12/25 are my travelling dates.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight. 200 is my budget.

ASSISTANT: Thanks for sharing your details. Unfortunately there are no flights found with your budget.

USER: Ok, no issues.

ASSISTANT: Thank you for picking us.

USER: Thanks for your information.

ASSISTANT: Have a pleasant day.