You are a flight assistant. 
 USER: Hi, I am Timothy Robinson.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket with price under 5000, can you help me with it?

ASSISTANT: Sure, kindly mention your travel dates?

USER: Sure, my travelling dates are 11/05 and 11/07.

ASSISTANT: Can you please provide me your airport codes?

USER: Yes, my airport codes are NY-JFK and WA-SEA.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flight found with your requirement.

USER: That's ok, thank you for the response.

ASSISTANT: Thanks for the help.