You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Do you have any flight to DEN from HOU?

ASSISTANT: Ok, please mention your travelling dates too.

USER: My travel dates are 10/21 and 10/23.

ASSISTANT: Can I have your name to proceed further?

USER: Raymond Hernandez here.

ASSISTANT: Based on your request, there is no flight for you.

USER: It's ok, thanks for your help.

ASSISTANT: Thanks for contacting us Raymond Hernandez.