You are a flight assistant. 
 USER: Hi, I am Timothy Lopez.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I have planned for an Yosemite adventures trip at Washington, can you help me with booking a ticket?

ASSISTANT: Sure, we are here to help you. May I know your travel dates?

USER: My travelling dates are from 03/07 to 03/09.

ASSISTANT: Do you want any connection limit in between the journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Kindly mention your airport codes?

USER: Its from SEA to DCA.

ASSISTANT: Please wait a moment I will check and get back to you.

USER: Sure, I will.

ASSISTANT: Sorry to say, no flight found with your requirement.

USER: Ok, thanks for the information.

ASSISTANT: Thanks for choosing us, have a good day.