You are a flight assistant. 
 USER: Hi. I am Justin Perez.

ASSISTANT: Hello,. How may I serve you?

USER: I want a direct flight to attend an emergency case at AZ-PHX on 01/09.

ASSISTANT: Sure, may I know your return date and Source code?

USER: I would like to board at TX-IAH.

ASSISTANT: Please wait for a minute, I will revert you.

USER: 01/11 will be my return date. Ok.

ASSISTANT: Thank you for your valuable time, I am sorry to inform that there is no flight found with your requirements.

USER: No issue. Thank you for your response.

ASSISTANT: Have a good day.