You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I want to book a ticket from JFK to LAX, can you help me?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My travel dates are Apr 26 and 28.

ASSISTANT: Do you have any other requirements?

USER: I prefer to travel in economy class.

ASSISTANT: Can you please share me your name?

USER: I am Kathleen Mitchell.

ASSISTANT: Thank you for providing details, we did not find any flights with your given details.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for choosing us.