You are a flight assistant. 
 USER: Hi, I am Debra Anderson.

ASSISTANT: Hello, Debra Anderson. How may I assist you for the day?

USER: I am planning to attend my friend's wedding party in Phoenix, could you help me in booking my flight ticket within 5000.

ASSISTANT: Sure. May I know your airport codes, Please?

USER: My travelling is from IAH to PHX. I would like to fly on 01/02 and return on 01/04.

ASSISTANT: May I know, Do you have any restriction on connections limit?

USER: Yes, I need a direct flight.

ASSISTANT: OK. We are very sorry to inform you that, There are no direct flights available on your travel dates.

USER: Ok, not an Issue. Thank you for your help.

ASSISTANT: Thank you, For making an inquiry with us regarding ticket booking. Have a great day.