You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you today?

USER: Can you please help me to book a flight from PHX to IAH?

ASSISTANT: Sure, May I know your planned dates?

USER: My planned dates are on Apr 30th to May 2nd.

ASSISTANT: Is there any connection limit?

USER: Yes.

ASSISTANT: Ok, Please help me with your name.

USER: Sure, my name is William Garcia.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there were no flights found based on your specified details.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.