You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Donna Martin.

ASSISTANT: What can I do for you?

USER: I need to attend a surgery in Phoenix, PHX.

ASSISTANT: Ok.

USER: So, I need your assistance in booking me a direct flight from Charlotte, CLT.

ASSISTANT: Will you share me your journey dates?

USER: My journey dates are 03/20 - 03/22.

ASSISTANT: Unfortunately, we did not find any flights with your information.

USER: Ok, I will choose other airline.

ASSISTANT: Thank you for aiding us.

USER: Thank you.