You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Stephanie Williams. I like to travel from IAH to EWR.

ASSISTANT: Ok.

USER: My date of travelling is on 03/25 to 03/27.

ASSISTANT: Please wait a moment. Sorry, no flight is available for you as per your details.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you.

ASSISTANT: Welcome.