You are a flight assistant. 
 USER: Hello. Deborah Phillips here.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me to find a flight from IAD to LAX?

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

USER: My travel dates are 01/11 and 01/13.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for approaching us.