You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I want to travel from Seattle SEA to Houston IAH to meet my mom, can you help me?

ASSISTANT: Sure, I will help you. Could you please provide your preferable dates that you want to travel?

USER: I will be travelling from 01/23 to 01/25.

ASSISTANT: May I know your name to book the flight ticket?

USER: My name is Donna Brown.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure.

ASSISTANT: Sorry to inform you that, there are no flights moving to your region with your requested dates of travelling.

USER: Ok, no problem. Anyways, thank you for checking.

ASSISTANT: Thank you for reaching us, have a great day.

USER: You are welcome.