You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER:  I am Justin Collins. I want to travel to AZ-PHX from CO-DEN to attend a meeting. can you book a connecting flight?

ASSISTANT: Sure, when are you planning to travel?

USER: My travel dates are 05/01 and 05/03.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: Thank you for your help.

ASSISTANT: Thank you.