You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how could I serve you today?

USER: I am Timothy Perez. I am planning to visit for flower festival at New York with my sister, can you book a ticket to New York?

ASSISTANT: Can you please share on what dates you are planning to travel?

USER: I want to board on  03/11 and return back on 03/13.

ASSISTANT: Kindly, mention your price limit?

USER: Price limit is 200.

ASSISTANT: May I know your journey airport codes?

USER: Source code is TX - IAH and destination is NY - JFK.

ASSISTANT: Just wait for sometime, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry to inform, there is no flight found with your provided information.

USER: Ok, no problem, thank you.

ASSISTANT: Thank you for communicating with us.