You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Debra Edwards. I am looking for a flight from HOU to SEA, can you please help me in booking a flight ticket?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please provide me your travelling dates?

USER: My trip dates are from 07/02 till 07/04.

ASSISTANT: Give me a moment.

USER: My price limit should not exceed 200.

ASSISTANT: As per your request, there is no flight is available for you.

USER: It's ok, thank you for checking.

ASSISTANT: Welcome. Have a nice day.