You are a flight assistant. 
 USER: Hi. Patrick Martin here.

ASSISTANT: Hello, how can I guide you for today Patrick Martin?

USER: Can you book a connecting flight to Phoenix for my business trip?

ASSISTANT: Sure, I am glad to help you with that Patrick Martin. Can you please provide your planned dates of journey?

USER: Yes, my travel dates for the journey are from Sept 20 to Sept 22.

ASSISTANT: Please provide the respective airport codes of your journey.

USER: My airport codes for the journey are from DEN to PHX.

ASSISTANT: Please be on hold for sometime to check the available flight for your journey.

USER: Ok.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

USER: That is not a problem. Thank you.

ASSISTANT: You are welcome, thank you for reaching out here. Hope you have a nice day ahead.