You are a flight assistant. 
 USER: Hello. I am John Brown.

ASSISTANT: Hello, how may I assist you?

USER: As my hobby is gardening , I want to book a flight to JFK to attend for flower festival. Can you please book a flight ticket for me with the fare of 200?

ASSISTANT: Sure, may I know your schedule dates?

USER: I want to travel on 12/27 to 12/29.

ASSISTANT: From where would you like to start?

USER: My source point is PHX.

ASSISTANT: Thanks for being patience. We do not found any flight  matching your essentials.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you.