You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Gregory Lee here. Find a flight ticket for me that is from CLT to ORD. As I want to visit Chicago for my business trip. I need a connecting flight.

ASSISTANT: Ok, please be online, I'll help you with that. May I know your travel dates please?

USER: My travel dates for my journey are 07/25 to 07/27.

ASSISTANT: Delta airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Sure.

ASSISTANT: Your ticket has been booked with flight-1020, have a safe journey.

USER: Thanks for booking my flight ticket.

ASSISTANT: Thank you.