You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you?

USER: I am Steven martin. I want to book a flight ticket to Denver as I am Owing to a business trip. Please help me with a connecting flight.

ASSISTANT: Sure, I am here to help you. May I know when you have planed to travel?

USER: My travelling dates are from 01/13 to 01/15.

ASSISTANT: Please help me with your journey codes to proceed further.

USER: I want to fly from AUS to DEN.

ASSISTANT: Please stand by.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to say no flights found with your details.

USER: No issues, thank you.

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