You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you?

USER: I am Ruth Nelson. I need your help in booking my flight ticket from DEN to EWR. Can you please help me?

ASSISTANT: Sure, we are happy to help you. May I know your travelling dates?

USER: Thank you. My journey dates are from 05/16 to 05/18.

ASSISTANT: Ok, please stand by.

USER: Take your time.

ASSISTANT: Thanks for the time, we are unable to provide flights on your journey routes.

USER: Oh! I am very disappointed by your services. Anyways, thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.