You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am Brandon Taylor. I am planning a trip for 2 days from SFO to DCA, can you help me?

ASSISTANT: Sure Taylor, Can you provide your journey dates?

USER: 11/17 and 11/09 are my travelling dates. Did you find any flight for me?

ASSISTANT: Give me a moment.

USER: Ok.

ASSISTANT: Sorry Taylor, I didn't find any flight with your details. Thank you for contacting us.

USER: Oh! ok. Thank you for your help.