You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please reserve me a flight ticket from LAX to IAH?

ASSISTANT: Sure, can you please share me with your dates of journey?

USER: My journey dates are Dec 31 and Jan 02.

ASSISTANT: May I know your name please?

USER: I am Stephen Davis.

ASSISTANT: Do you have any other specifications please?

USER: My return time is afternoon.

ASSISTANT: Please wait for a mean while.

USER: Sure.

ASSISTANT: Sorry Davis, no flight found as per your travelling details.

USER: Ok, no issues. Thank you.

ASSISTANT: You are welcome.