You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Charles Walker here. I would like to book a ticket from ORD to SEA. can you please help me to book a ticket?

ASSISTANT: Sure, we are willing to help you. May I know your budget for this reservation?

USER: Fare is 500.

ASSISTANT: Ok, please share me your journey dates.

USER: My travelling dates will be on 07/21 to 07/23.

ASSISTANT: Please give me a moment to check the availability.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a flight with single connection at a fare 200 in Delta airline. Shall I proceed with flight 1000?

USER: You can proceed to booking.

ASSISTANT: Your reservation has been done on the name Charles Walker.

USER: Thank you.

ASSISTANT: Thank you for selecting us.