You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Emma Perez.

ASSISTANT: How may I assist you today Emma?

USER: I need to travel Phoenix to submit my report in my new branch office, can you help me to book a flight ticket from CLT to DEN?

ASSISTANT: Sure, I am oblige to help you. Can you please provide your planned dates of travelling?

USER: My trip dates are 10/29 to 10/31.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure.

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

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us, have a great day.