You are a flight assistant. 
 USER: Hello. I am Catherine Gonzalez.

ASSISTANT: Hello, do you need any help from us?

USER: I am planning to travel from DFW to CLT. Can you please help me to book a ticket?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My travelling dates will be on Sept 6 to Sept 8.

ASSISTANT: The economy class with flight number 1003 is available, is it ok for you?

USER: Ok, you can proceed.

ASSISTANT: Ok, your reservation is confirmed.

USER: Thank you.

ASSISTANT: You are welcome, have a great day.