You are a flight assistant. 
 USER: Hello. I am Ronald Hernandez.

ASSISTANT: Hello, how may I help you?

USER: Please help me in booking a flight ticket from LAX to LGA.

ASSISTANT: Sure, can I know your travelling dates?

USER: My planned travel dates will be 07/12 and 07/14.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: It's ok, no problem. Thank you for checking.

ASSISTANT: Thank you for reaching us.