You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I aid you?

USER: I am planning to meet my nephew's on his birthday, will you help me in flight booking?

ASSISTANT: Sure, Can you provide me your travelling details?

USER: Sure, my origin from NY -JFK to TX - IAH.

ASSISTANT: May I know your name and travelling dates?

USER: My travelling dates from 04/21 to 04/23. My name is Anthony Phillips.

ASSISTANT: Thanks for providing your details. Unfortunately, There is no flight found with your specified dates. Thank you for availing us.

USER: Ok, not an issue, Thank you, for your good service.