You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I guide you for today?

USER: I am planning to visit Toyota Center in Houston, TX-IAH with my friend. Can you please help me for booking the flight ticket?

ASSISTANT: Yes, I am here to help you. Can you please let me know your travelling dates?

USER: Thank you, the travelling dates are 05/16 to 05/18.

ASSISTANT: Can you please provide your name for further process?

USER: Sure, my name is Ryan Robinson.

ASSISTANT: Please, provide your source of journey Robinson.

USER: The source code is from AZ-PHX.

ASSISTANT: Sorry Robinson, there is no flights on your preferable dates.

USER: No problem, I will search another way to complete my trip.

ASSISTANT: Not a problem, thank you for choosing our service. Hope you have great day.

USER: Thank you for your information.