You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Nicole Martin. I am planning to travel from SEA to JFK for a business meeting, can you please help me with booking a flight ticket?

ASSISTANT: What are your dates of journey?

USER: My travelling dates are 12/20 and 12/22.

ASSISTANT: Sorry, there is no flight available.

USER: That's ok. Thank you for the information.

ASSISTANT: Thank you.