You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Dorothy Adams.

ASSISTANT: Nice to meet you Adams.

USER: I want to travel from EWR to DEN. Please help me in booking my ticket.

ASSISTANT: Sure, may I know your travelling dates please?

USER: I am planning to start my journey on 03/09 and my return will be on 03/11.

ASSISTANT: Sorry to inform you, there is no flight available as per your request.

USER: It's ok, no issues. Anyway, thank you for your immediate response.

ASSISTANT: You are welcome.