You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis parker.

ASSISTANT: How can I help you today?

USER: I am planning to visit ATL to meet my sister, can you please find a flight from HOU?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: My travelling dates are 02/13 and 02/15.

ASSISTANT: Please give me a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, no flights are available on your route.

USER: That's ok, I will choose any other way to reach my destination on time. Anyway thank you for checking.

ASSISTANT: Welcome, have a nice day. Thank you for choosing us.

USER: Welcome.