You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Raymond Garcia here.

ASSISTANT: How may I help you?

USER: Can you help me to make a flight reservation from OAK to CLT?

ASSISTANT: Sure, help me with the trip dates?

USER: My travel dates are July, 15 and July, 17.

ASSISTANT: How much can you afford for a ticket fare?

USER: I can afford only 500 or less for this trip.

ASSISTANT: Do you have any class preferences?

USER: No, I am comfortable with any class.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 is provided by Frontier airlines. Shall I proceed with this?

USER: You can proceed with this flight.

ASSISTANT: Your flight ticket has been booked with 1001 number in an economy class.

USER: Thanks for your help and great service.

ASSISTANT: Thank you for availing us.