You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Eric Evans, I want to go to New York LGA for my cousin's engagement. Can you help me in ticket booking from HOU?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travelling dates are from 03/31 to 04/02.

ASSISTANT: Sorry Evans, there is no flight available on your provided dates.

USER: That's fine. Thank you for your time.

ASSISTANT: You are welcome.