You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Rebecca Roberts here. I want to book a flight reservation on the route from EWR to LAX, can you help me?

ASSISTANT: I am happy to help you, please mention your trip dates.

USER: My journey dates are from 03/05 and I will be returning back on 03/07.

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

USER: Oh! That's sad to know. Thank you for checking anyways.

ASSISTANT: Thanks for choosing us, have a good day.

USER: Most welcome.