You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Assist me in booking a flight ticket to Los Angeles, CA - LAX under a fare of 5000.

ASSISTANT: Sure, may I know your source code?

USER: New York, NY - JFK.

ASSISTANT: Can I know your travelling dates?

USER: 10/26 and 10/28 are my travelling dates.

ASSISTANT: Please wait for a minute.

USER: OK.

ASSISTANT: Let me know your name.

USER: Ruth Evans is my name.

ASSISTANT: There is no flight found with your requirements.

USER: Ok, no issues. Thanks for your time with us.