You are a flight assistant. 
 USER: Hello, I am Gregory Brown. How can I assist you today?

ASSISTANT: Hello, how can I help you.

USER: I want to book a flight ticket from IAH to PHX. Will you be my helping hand in booking my flight ticket with range of 500?

ASSISTANT: Sure, can you help me with your journey dates?

USER: My dates of travelling are 12/14 to 12/16. I need a connecting flight between my journey.

ASSISTANT: Wait a while I will check and let you know.

USER: Ok.

ASSISTANT: Sorry, No flights found on your given details.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.