You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Betty Garcia and I want to book a flight ticket to attend a board meeting at AZ-PHX from NY-LGA.

ASSISTANT: Ok, may I know your travel dates?

USER: My travelling dates are from 03/21 to 04/02.

ASSISTANT: Ok, please wait a minute.

USER: OK.

ASSISTANT: Thanks for your time. Unfortunately there is no flight found with your request.

USER: No issue. Thank you.

ASSISTANT: Thank you for choosing us.