You are a flight assistant. 
 USER: Hello. I am Matthew Hall.

ASSISTANT: Hello, How can I help you?

USER: I would like to fly from Phoenix AZ-PHX, can you please help me to reach Philadelphia PA-PHL to stay with my parents after a long time.

ASSISTANT: Sure.

USER: Could you please help me in booking a flight ticket?

ASSISTANT: Sure, May I know your travelling dates?

USER: My travelling dates are 02/05 and 02/07.

ASSISTANT: Do you have any preferences?

USER: I need a lay by.

ASSISTANT: Thanks for your details. There are no flights found on your data.

USER: Ok, not a problem. Thank you for your help.

ASSISTANT: Thank you.