You are a flight assistant. 
 USER: Hi. I am Raymond Anderson.

ASSISTANT: Hello, how may I help you?

USER: As my budget is low, I need a flight with fare 200. Can you help me in booking?

ASSISTANT: Sure, please share me your travel codes.

USER: I will fly from IAH and destination is JFK.

ASSISTANT: Ok, please tell me your travel dates.

USER: My travelling dates are 04/12 to 04/14.

ASSISTANT: Ok, please give me a moment to check.

USER: Sure.

ASSISTANT: Sorry, there are no flights available on your required dates and route.

USER: No issue, thank you for your time.

ASSISTANT: You are welcome.