You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I have to go Orlando for attending a birthday party there, can you please book a flight ticket from HOU to MCO?

ASSISTANT: Sure, we are happy to help you. Can you please provide your preferable dates of travelling?

USER: Thanks, my departure date is 07/29 and please book my return ticket also on 07/31.

ASSISTANT: May I know your name please?

USER: Sure, my name is Pamela Martin.

ASSISTANT: Ok, please wait a moment to check the flights availability.

USER: Ok.

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

USER: Oh! It's ok no problem, I will go with another airline. Thank you for your service.

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