You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I help you?

USER: Could you please help me in booking ticket?

ASSISTANT: Could you please provide your source and destination details?

USER: My source of travel is from NV-LAS to Destination CA-SFO.

ASSISTANT: Could you please provide your travelling dates?

USER: My dates of travel are 01/14 to 01/16.

ASSISTANT: Could you please provide your name for further proceedings?

USER: I am George Smith.

ASSISTANT: Could you please provide your price and connection limit?

USER: I am looking for a flight with in 1000.

ASSISTANT: Sorry, there is no flight available at your request.

USER: Thank you.

ASSISTANT: Thank you for contacting us.