You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Richard Johnson.I would like to travel from ATL to LAX.

ASSISTANT: Ok. Can you help me with your travelling dates?

USER: My travelling dates are 11/10 and 11/12.

ASSISTANT: Thank you for your information. Sorry, there is no flight as per your details.

USER: Ok it's fine.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your services.