You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Benjamin Lopez. I want to book a flight ticket from TX-IAH to NY-EWR for attending a seminar in  New York. Can You help me in booking a flight ticket?

ASSISTANT: Sure, we are here to help you. Please provide your price limit.

USER: My price limit is 5000.

ASSISTANT: Ok, Can you please provide your journey dates?

USER: My departure day is 08/06, return day is 08/08.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for being patient, we are sorry to inform you that there is no flight found with your given details.

USER: Ok, no problem, thanks for your quick response.

ASSISTANT: Thank you for choosing us.

USER: Thank you.