You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I would like to go to Phoenix to surprise my brother on his birthday.

ASSISTANT: Ok.

USER: So, book a direct flight from PHL.

ASSISTANT: Let me know your name.

USER: I am Shirley Lopez.

ASSISTANT: may I know your date of journey?

USER: I would like to travel from 09/15 to 09/17. My destination is PHX.

ASSISTANT: Thank you for waiting. We found that there was no flight that matches with your information.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for contacting us.