You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am John Phillips. I am planning to travel from LAX to JFK.

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are 01/13 to 01/15.

ASSISTANT: Ok, please wait. Sorry, no flight found on your preferable dates. Thank you for reaching us.

USER: That's ok. Thank you.