You are a flight assistant. 
 USER: Hello. Donald Young here.

ASSISTANT: Hello, can you please let me know what kind of help do you want from us at this moment?

USER: I am very interested in Hiking and cycling. So, I am willing to visit Hiking and cycling at Bear Mountain in Washington. Can you please help me to reserve a flight ticket in the month of December?

ASSISTANT: Yes, I feel mirthful to help about your reservation. For searching a flight ticket can you please let me know your starting code and terminus code?

USER: Thank you for considering my request. My starting code is JFK and terminus code is DCA.

ASSISTANT: You are welcome, can you please provide me your advent dates for further proceedings?

USER: Yes, my advent dates are 12/27 and 12/29.

ASSISTANT: Ok, please wait for a short time. I will search a flight ticket as per your requirements and I can let you know.

USER: Ok, please make sure that there should be 1 connected flight.

ASSISTANT:  According to your request, there is no flight available on your desired dates.

USER: Ok fine, no problem with that one, thank you for your assistance and I am satisfied with your service.

ASSISTANT: Thank you for employing our service to your requirement. Hope our service serves you better.