You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Stephanie Carter.

ASSISTANT: How may I guide you today?

USER: I am planning to visit Philadelphia, will you help me in booking the flight ticket  from DEN to PHL?

ASSISTANT: Sure, I will help you with that. Can you please your preferable journey dates?

USER: My travelling dates are 09/09 and 09/11.

ASSISTANT: Please wait for a minute.

USER: I need direct flight in my journey.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.