You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Emma Hernandez. I am looking for a flight from IAH to ATL, can you help me out?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My trip dates are from 04/29 till 05/01.

ASSISTANT: Sorry, there is no flight available as per your request.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Most welcome.