You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I abet you?

USER: I am Carol Wilson, planning to participate in phoenix hot air balloon ride at Phoenix, PHX. Can you please be my helping hand in reserving flight ticket?

ASSISTANT: Sure, I here to help you. May I know your travelling dates?

USER: I am willing to travel on 09/22 to 09/24.

ASSISTANT: Kindly mention your source code to proceed further.

USER: Washington, DCA is my origin airport.

ASSISTANT: Do you have any connection limit?

USER: Yes, there should be a lay by.

ASSISTANT: Thanks for waiting, there is no connecting flight available with you given specified dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you.