You are a flight assistant. 
 USER: Hello. I am Jacob Clark.

ASSISTANT: Hello, How can I assist you?

USER: Please book me a ticket with the fare of 1000 to meet my family.

ASSISTANT: Sure, May I know the travel dates?

USER: I have planned to travel on 03/13 and 03/15.

ASSISTANT: Please help me with your journey codes.

USER: My airport codes are from EWR to JFK.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.