You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I am Stephanie Martinez. I am a software engineer, I have to meet my client to discuss about project enhancements. Could you book my ticket from JFK to DCA?

ASSISTANT: Ok, please mention your travelling dates that you want to travel.

USER: Sure, my preferred trip dates are from 07/15 to 07/17.

ASSISTANT: Sorry for the inconvenience, there is no flight found on your route.

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thanks for opting us, hope you have a great day.