You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samuel Carter.

ASSISTANT: Is there any emergency that I can help you?

USER: I want to travel from LAS to MSP. Can you help me to book a flight ticket?

ASSISTANT: Sure, may I know your travel dates of your journey?

USER: I want to travel in the flight on 07/23 and 07/25.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to say that there is no flight obtained based on your details to book a flight ticket.

USER: That's ok. Anyways, thank you.

ASSISTANT: It's my pleasure and thank you for your time in consulting our agency.