You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Helen Carter.

ASSISTANT: Yes, Carter.

USER: I would like to attend my sister's birthday party at Charlotte. Can you please help me out to book a ticket from EWR to CLT?

ASSISTANT: Sure, I will help you out. Please provide me your travel dates?

USER: Thank you. My travelling dates are 09/30 and return on 10/02.

ASSISTANT: Please wait a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry Carter, no flights are available in your route.

USER: That's fine. Thank you for your help.

ASSISTANT: Thank you for reaching us.