You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How could I aid you?

USER: Can you please reserve a flight ticket from JFK to ORD?

ASSISTANT: Sure. will you please let me know your planned travel dates?

USER: Sure, my planned travelling dates are Oct, 27 and 29 respectively.

ASSISTANT: Do you have any other requirements?

USER: I prefer to travel in direct flight.

ASSISTANT: May I know your name please?

USER: Sure, my name is Helen Hernandez here.

ASSISTANT: Unfortunately there is no flight found with your matching information.

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

ASSISTANT: Thank you for choosing us.