You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a connecting flight ticket to meet my clients at CA. Can you help me?

ASSISTANT: Sure, may I know your planned travel dates?

USER: 05/09 and 05/11 are my trip dates.

ASSISTANT: May I know your source point?

USER: Sure, I would like to start my journey from DEN.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: Unfortunately there is no flight found with your given information.

USER: No issue. Thank you.

ASSISTANT: May I know your name please?

USER: Elizabeth Moore.

ASSISTANT: Thank you.