You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Gonzalez.

ASSISTANT: How can I help you?

USER: I am planning to visit Space needle in Seattle, can you please help me in booking a flight ticket?

ASSISTANT: Sure, I will help you to book a flight. Can you please share me your travelling dates?

USER: My planning dates are from 07/27 till 07/29.

ASSISTANT: Ok, please share me your travelling airport codes.

USER: Sure, my airport codes are from JFK to SEA.

ASSISTANT: Sorry, there is no flight is found on your route.

USER: It's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.