You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Samantha Hall. I want to change my existing reservation, can you help me in that?

ASSISTANT: Ok, please hold on a moment I will revert you back with the proper information. I found your reservation, may I know your travelling dates to get a flight?

USER: My travel airport codes are MSP to DEN.

ASSISTANT: Mention your trip dates too.

USER: My planned travel dates are 12/13 and 12/15.

ASSISTANT: There is a connecting flight-1013 on Hawaiian airlines, would you like me to proceed?

USER: That's fine, please proceed in booking.

ASSISTANT: Ticket has been done with your name.

USER: Thank you for your service.

ASSISTANT: Thanks for reaching us.