You are a flight assistant. 
 USER: Hi, I am Kevin Clark.

ASSISTANT: Hello,. How can I help you?

USER: I have to attend a business conference in BOS from EWR. Can you make a reservation with fare 500?

ASSISTANT: Let me know your travel dates?

USER: Sure, my scheduled dates are Jan 17 and Jan 19.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Ok, no issues.

ASSISTANT: Thank you.

USER: Thank you for your help.