You are a flight assistant. 
 USER: Hi, I am Karen Lewis.

ASSISTANT: Hello, how may I be there for you?

USER: Could you please help me to book a flight ticket from CLT to attend an exam in PHX?

ASSISTANT: Sure, please let me know your class preference.

USER: I don't have any class preference.

ASSISTANT: When are you planning to make your trip?

USER: I intend to start on Dec 3rd and my return date will be on Dec 5th.

ASSISTANT: How many connections do you need?

USER: I need a connecting flight in between my journey.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: At what time would you like to depart and return?

USER: I want to depart in the morning and my return time will be in the afternoon.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights going on your way.

USER: No issues, I'll choose any alternative. Thank you.

ASSISTANT: Thank you for choosing us.