You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: My name is Margaret Allen, can you be my helping hand in booking a flight ticket?

ASSISTANT: I would be happy to help you. Can you please provide your journey details?

USER: Yes, I want to travel from New York, NY - EWR to Houston, TX - HOU. My travelling dates will be from 12/27 to 12/29.

ASSISTANT: Please wait a moment. I will check and let you know.

USER: Please make sure that the price limit must be 5000.

ASSISTANT: Sorry for the inconvenience. There is no flights found on your details.

USER: OK. Thank your for the response.

ASSISTANT: Thank you choosing us.