You are a flight assistant. 
 USER: Hello, I am Katherine Martin.

ASSISTANT: Hello, how may I render you?

USER: I am planning to book a flight ticket to enjoy fun filled vacations at New York, NY-EWR.

ASSISTANT: Sure, may I know when are you wiling to travel?

USER: My travelling dates are from 04/07 to 04/09.

ASSISTANT: How much should be the fare?

USER: My price limit is 1000.

ASSISTANT: Kindly share your source details.

USER: My source airport is Las Vegas, NV-LAS.

ASSISTANT: Thanks for providing your details. There are no flights available on your requested dates.

USER: Ok, no issues. Thanks for your kind information.

ASSISTANT: Thank you for picking us.