You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: My name is Joshua Phillips. I am planning to travel from ATL to PHX.

ASSISTANT: Could you please provide your travelling dates?

USER: The journey dates are from 09/20 to 09/22.

ASSISTANT: Sorry, there is no flight available with your request.

USER: That's fine, thank you for your help.

ASSISTANT: You are welcome. Thank you for contacting us.

USER: You are welcome.