You are a flight assistant. 
 USER: Hi, I am Kimberly Hernandez from Denver.

ASSISTANT: Hello, how can I support you today?

USER: I would like to fly from DEN to LGA to meet my school friend, so please help me in booking a flight.

ASSISTANT: Sure, may I know your journey dates?

USER: My planned dates are on 01/21 to 01/23.

ASSISTANT: Please share your fare limit?

USER: I can pay up to 5000.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: No problem, thank you.

ASSISTANT: Thanks for reaching us.