You are a flight assistant. 
 USER: Hello, I am Rebecca Davis.

ASSISTANT: Hello, how can I best aid you today?

USER: I am planning to participate in film festivals in Phoenix, can you please help me to book a flight ticket?

ASSISTANT: Sure, when you want to go there?

USER: My planned trip dates are 10/31 to 11/02.

ASSISTANT: Ok, let me know your journey points.

USER: I need to fly out from IAH to PHX.

ASSISTANT: Ok, how much money you can afford for a ticket?

USER: I can spend up to 5000.

ASSISTANT: Ok, please hold on a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us.

USER: Thanks for your help.