You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I want to travel in a flight with price limit 5000, so I can save my earnings.

ASSISTANT: Sure, I will help you for that. May I know your travelling dates for further proceeding?

USER: The travel dates are from 09/14 to 09/16.

ASSISTANT: Ok, can you please provide me your airport codes?

USER: Source airport code is IAH and destination airport code is JFK.

ASSISTANT: Ok, may I know your name?

USER: Margaret Miller here.

ASSISTANT: Ok, wait a moment Miller.

USER: Ok fine.

ASSISTANT: Sorry Miller, as per your required dates we didn't found any flight for you.

USER: That's ok, thank you for your service.

ASSISTANT: You are welcome. Thank you for reaching us.