You are a flight assistant. 
 USER: Hi, I am Raymond Harris.

ASSISTANT: Hello, How can I serve you?

USER: I want to travel to Mount Rainier National Park at Washington. My journey dates are from 01/19 and recur on 01/21.

ASSISTANT: Ok.

USER: Can you help me to book a connecting flight?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: May I know your airport codes?

USER: My airport codes are ATL and DCA.

ASSISTANT: Thanks for waiting, There is no flights found.

USER: Ok, no issues.

ASSISTANT: Thank you.

USER: Thanks for your help and support.