You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Sure, may I know your respective dates of travel please?

USER: My travel dates are 01/11 and 01/13.

ASSISTANT: Ok, may I know your name please for further process of booking?

USER: Myself Paul Phillips.

ASSISTANT: Sorry Paul, there is no flight found as per your travelling details.

USER: No problem, thanks for checking.

ASSISTANT: You are welcome.