You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to travel NY - JFK on 04/13 with my friends to hangout in New York. Can you help me to book my flight ticket? I would like to return back to my current location DC - IAD on 04/15.

ASSISTANT: Sure, give me a minute. Sorry to say that there is no flight found. Can you please give me your full name?

USER: Ok, thank you for the information.I will go with another.

ASSISTANT: Thank you.

USER: Myself Sarah Davis.

ASSISTANT: Welcome.