You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Can you please help me to find a flight ticket from IAH to MCO?

ASSISTANT: Sure, I am  here to help you out. Please provide me your trip dates.

USER: My journey dates will be from Jan 2nd to Jan 4th.

ASSISTANT: May I know your respected name to proceed further?

USER: My name is Barbara Nelson.

ASSISTANT: Do you have connection limit?

USER: I don't have any requirements, thank you for asking.

ASSISTANT: Ok, please allow me a moment.

USER: Ok, take your time. Please check with the mentioned details.

ASSISTANT: I regret to inform you that there is no flight in your route. Sorry for inconvenience. I tried to give the best service to you but really sorry for this moment.

USER: Oh! That's very sad to know. Anyways, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.