You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a flight ticket on 03/02. Can you help me in booking my ticket?

ASSISTANT: Sure, may I know your name please?

USER: I am planning to visit Phoenix PHX for funfair. I am Anna Johnson.

ASSISTANT: Ok, may I know your departure and your return date please?

USER: I will recur on 03/04. Price should be 500 and I will start from IAH.

ASSISTANT: Ok, hold on a moment I will be back.

USER: Sure.

ASSISTANT: Thanks for waiting, we have not found any flights with your given details.

USER: Ok. Thank you for your information.

ASSISTANT: Thank you for choosing us.