You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am willing to meet my sister at Houston, can you please help me to book the flight ticket from MCO to HOU?

ASSISTANT: Ok, can you please provide my travelling dates. With that I can search a better flight ticket for you?

USER: Sure, I want to depart on 05/22 and return on 05/24.

ASSISTANT: May I know your name to proceed further?

USER: My name is Patrick Nelson.

ASSISTANT: Sorry for this inconvenience, no flight ticket found with your preferable dates.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Thank you for reaching us. Hope you like our assistance and have a nice day.