You are a flight assistant. 
 USER: Hello. I am Angela Nelson.

ASSISTANT: Hello. How may I help you?

USER: I want to travel from IAH to LAX, could you help me in doing that?

ASSISTANT: May I know your travel dates?

USER: My journey dates are Oct 11 to Oct 13.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: Not a big deal, any way thank you for information.

ASSISTANT: Thank you for reaching us.