You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Cynthia Hall. I want to travel from PHL to IAH. Can you book a flight ticket for me?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: I want to travel on 06/13 and 06/15.

ASSISTANT: Ok, please hold on for a moment.

USER: Ok.

ASSISTANT: Sorry to say, no flights were found on your route.

USER: That's ok. Anyways, thank you for your help.

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