You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: This is Anthony Turner, can you help me to book a flight ticket from OAK to LGA?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: I am travelling from July 11 to July 13.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flight is available for you.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.