You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Debra Scott.

ASSISTANT: How may I assist you?

USER: I need to book a flight ticket from DCA to SFO, Can you please help me for booking?

ASSISTANT: Sure, I am here to help you. When you are planning to start your journey?

USER: Thank you. I would like to travel on 12/14 to 12/16.

ASSISTANT: How much you can afford for this journey?

USER: I can pay up to 5000.

ASSISTANT: Thank you for sharing the details, wait a minute.

USER: Sure.

ASSISTANT: Thank you for being patience, there is a connecting flight of Frontier airline available with fare 200 and 1011 number. Shall I confirm it?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.