You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Due to some client meeting, I am willing to change my reservation. Can you please help me for this?

ASSISTANT: Sure, I am here to help you.

USER: Thank you very much for quick access.

ASSISTANT: Can you please mention your name?

USER: Myself Jason Davis.

ASSISTANT: We found reservation on your name, can you please share your locations codes?

USER: Sure, my airport codes are DEN to ORD.

ASSISTANT: Can you please share your travelling dates?

USER: I am planning my trip on July 15 and again I will be return back on July 17.

ASSISTANT: Do you have class preference?

USER: No, I am comfort with any class.

ASSISTANT: Do you need connection limit?

USER: I am flexible with single connection.

ASSISTANT: Do you prefer any airline?

USER: No, I am comfort with any airlines.

ASSISTANT: We found Hawaiian Airline with fare 200 and flight number is 1005 with connecting flight. Shall I proceed with the booking?

USER: Yes, please go ahead and reserve the ticket.

ASSISTANT: Your ticket has been booked.

USER: Thank you very much for reserving the ticket.

ASSISTANT: Thank you for choosing us.