You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please help me in booking a flight ticket from EWR to LAX?

ASSISTANT: Sure, can you please let me know your dates of journey?

USER: My trip dates are 03/13 - 03/15.

ASSISTANT: May I know your good name please?

USER: Charles Robinson here.

ASSISTANT: Do you have any other specifications please?

USER: My return time should be in the evening.

ASSISTANT: Ok, please wait for a mean while.

USER: Sure.

ASSISTANT: Sorry Charles, there is no flight found as per your travelling details.

USER: No issues, thank you.

ASSISTANT: You are welcome.