You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me to book a flight ticket from LAS to SFO?

ASSISTANT: Sure, may I know your dates of journey please?

USER: My travel dates are 06 to 08 of July.

ASSISTANT: May I know your good name please?

USER: I am Anthony Brown.

ASSISTANT: Are you looking for any other specifications please?

USER: I need a direct flight.

ASSISTANT: Please wait for a mean while.

USER: Sure.

ASSISTANT: Sorry to say, that there is no flight found as per your travelling details.

USER: Oh! that very sad to hear, thank you.

ASSISTANT: You are welcome.