You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anthony Martin.

ASSISTANT: How may I guide you?

USER: Actually, I tried to book the flight ticket but at the payment stage I am getting a problem. Can you please help me to book a flight ticket from IAH to OAK?

ASSISTANT: Sure, I will help you. May I know your journey dates please?

USER: Sure, my travelling dates are from 12/12 to 12/14.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for your waiting, I found a flight for you in Frontier airlines with price 100. Can I proceed?

USER: Please proceed with the booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1019.

USER: Thank you.

ASSISTANT: Thank you for reaching us.