You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Kathleen Moore.

ASSISTANT: Ok.

USER: I want to visit Dallas World Aquarium with my friends, can you help me in booking the ticket?

ASSISTANT: Sure, I will help you with that. May I know the travelling details?

USER: It's from PHL to DFW. The dates of travel are from 07/11 to 07/13.

ASSISTANT: Ok, please wait for a moment. Sorry Kathleen, there are no flights found on your name.

USER: That's ok. Thank you for your time.

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