You are a flight assistant. 
 USER: Hello. I am Melissa Green.

ASSISTANT: Hello, how can I serve you?

USER: As I am a radio jockey, I got an invitation to attend for talk festivity which is going to held at Philadelphia, PHL. Can you please book a flight ticket from Charlotte, CLT?

ASSISTANT: Sure, I am perky to help you. Can I know your travelling dates?

USER: I planning to start on 07/10 and return on 07/12.

ASSISTANT: Is there any price limit?

USER: Yes, Price should be below 500.

ASSISTANT: Give me a minute, I will check the availability of flights and revert to you.

USER: Ok.

ASSISTANT: We found a flight with Frontier airline with flight number:1007. The fare is 100 with a halt.

USER: You can proceed to reserve this flight.

ASSISTANT: Your ticket has been booked.

USER: Thank you for assisting me.

ASSISTANT: Thank you for choosing us.