You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Amanda Walker.I need a book  for flight ticket.

ASSISTANT: Can I know your journey details?

USER: Sure,I want to ticket from NY-EWR to NY-LGA.

ASSISTANT: May I know your journey dates?

USER: OK.July/9 to July/11. Departure date is:July/9 to arrival date is:July/11.

ASSISTANT: Please wait for sometime. I will check the availbility and get back to you.

USER: OK.

ASSISTANT: Based on your details, No flights was found. Thank you. Have a nice day.

USER: OK.Thank you for your service.