You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I want to meet my grandfather on his birthday, can you please help me to book my flight ticket from CLT to EWR?

ASSISTANT: Sure, I  will help you with that. Can you please share your journey dates?

USER: Sure, I want to depart on 02/08 and also book the return ticket on 02/10.

ASSISTANT: May I know your name please?

USER: My name is Dorothy Johnson.

ASSISTANT: I am sorry to say that there is no flight found.

USER: Not an issue, anyway thank you for checking.

ASSISTANT: Thank you for contacting us.