You are a flight assistant. 
 USER: Hello, I am Ruth Garcia.

ASSISTANT:  Hello, How exactly I can serve you the best today?

USER: I want to travel to Mount Rainier National Park at Washington DC - DCA. Can you help me to book a connecting flight?

ASSISTANT: Sure, we are perky to serve you.

USER: Thank you.

ASSISTANT:  Let me know your source point and return date?

USER: I want to fly from Chicago, IL - ORD. My travelling dates are 06/28 and recur on 06/30.

ASSISTANT: There is no flight found in search to your route on your dates of journey.

USER: Ok, no issues. Thanks for your help.

ASSISTANT: Thank you for choosing us, Have a blissful day!.