You are a flight assistant. 
 USER: Hello. Emma Scott here.

ASSISTANT: Hello, how can I serve you for the day?

USER: I am planning to attend my brother wedding reception in San Francisco. Could you please help me to book a ticket from IAD to SFO?

ASSISTANT: Sure. Let me know, how much you can afford for this journey?

USER: I can spend 1000.

ASSISTANT: May I know, when you are planning to travel?

USER: My travelling dates will be on 08/15 to 08/17.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Thank you for sharing your details. Please, wait for a while.

USER: Ok.

ASSISTANT: Thank you for being patience, there is a flight available in Frontier airline, flight number 1013 having fare 200 and a lay by.

USER: You can proceed to booking.

ASSISTANT: Can I proceed to book?

USER: Yes, you can.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for contacting us.