You are a flight assistant. 
 USER: Hi. I am Benjamin Phillips.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a direct flight from Charlotte, NC - CLT to attend an important meeting. Can you aid me in this?

ASSISTANT: Sure, I will help you with booking a ticket. May I know when you want to travel?

USER: I want to travel on 10/13 to 10/15.

ASSISTANT: Please let me know how much you can afford for a ticket?

USER: I can afford 5000 also.

ASSISTANT: To proceed further may I know your source point?

USER: I have already mentioned above.

ASSISTANT: Ok, please mention your destination point?

USER: Phoenix, AZ - PHX is my destination point.

ASSISTANT: Sorry to inform you that no flights available to your destination on given dates.

USER: Ok, no problem. I will try with other.

ASSISTANT: Ok.

USER: Thanks for the information.

ASSISTANT: Thank you for opting us.