You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Angela Smith.

ASSISTANT: How can I aid you today?

USER: Can you please help me with flight ticket booking from CLT to DEN?

ASSISTANT: Sure, I am here to help you. May I know your dates of journey?

USER: Sure, I need to travel on dates of 11/01 and 11/03.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: Oh! It is sad to hear. Anyway, thank your for your time.

ASSISTANT: Thank you for approaching us.