You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Charles Hernandez, I want to book a flight ticket from Chicago, IL-ORD to see my grand father. Can you help me to book a flight under fare of 5000?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I will travel on 02/23 and return on 02/25.

ASSISTANT: Please share your further journey details.

USER: My destination point is WA-SEA.

ASSISTANT: We are glad to say that, we found an airline: Frontier, flight number: 1001 with a single connection and price is 100.

USER: Please proceed with booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.