You are a flight assistant. 
 USER: Hello, I am Mary Allen.

ASSISTANT: Hello, how can I help you today?

USER: I want to visit hard museum with my family. Could you please help me to book a ticket from TX - HOU?

ASSISTANT: Sure, let me know your travelling dates?

USER: My journey dates will be on 06/22 to 06/24.

ASSISTANT: Ok, help me with your destination airport code?

USER: My destination airport code is AZ - PHX.

ASSISTANT: Any other specifications?

USER: I need connecting flight with price 200.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: thanks for waiting, no flights found with your given details.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for approaching us.