You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My name is Ronald Turner. I want to travel from PHL to BOS.

ASSISTANT: Ok, can you please provide your travelling dates?

USER: I want to travel from 02/06 to 02/08.

ASSISTANT: Ok Ronald, please give me a minute so that I can check the availability of flights for you.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights found which matches with your preferences.

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

ASSISTANT: Thank you, have a nice day.