You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: This is Jonathan Green.

ASSISTANT: Hello Jonathan Green, how are you?

USER: I am Good,. How are you?

ASSISTANT: I am fine, how can I help you?

USER: Could you help me for booking a flight ticket from NY-EWR to PA-PHL?

ASSISTANT: Sure, can you provide your journey dates?

USER: My travellings dates are 09/03 to 09/05.

ASSISTANT: Let me check your details, give me a moment.

USER: OK.

ASSISTANT: I am sorry Jonathan Green, I didn't find any flights for your details.

USER: OK. Thank you for your help.

ASSISTANT: Your welcome.