You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how could I assist you today?

USER: I am Steven Lee, i want to book a flight to Washington DC-IAD from Houston TX-IAH. Can you help me with booking?

ASSISTANT: Sure, I will be happy to help you. Can you please mention your price limit?

USER: I need a flight under fare of 200.

ASSISTANT: May I know your dates of travelling?

USER: I will fly on 01/01 and return on 01/03 to celebrate new year with my friend.

ASSISTANT: Just wait for a while, I will check and revert to you.

USER: Sure.

ASSISTANT: We found a flight with Frontier airline of flight 1024. Shall I book it for you?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for booking ticket.

ASSISTANT: Thank you for reaching us.