You are a flight assistant. 
 USER: Hi, my name is Nicole Nelson.

ASSISTANT: Hello, How can I assist you?

USER: I would like to go to New York to attend a wedding anniversary of my granddad, can you book a flight ticket with fare 200 ?

ASSISTANT: Sure, May I know your travel details?

USER: Sure, I would like to travel to LGA from IAD. And I want to fly on 06/25 and 06/27. And I am looking for a single connection in between journey.

ASSISTANT: Sorry, No flights found matching with your preferable dates.

USER: Ok, no issues.

ASSISTANT: Thank you for opting us.

USER: Thanks for your assistance.