You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Sharon Evans. I need to change my existing reservation, can you please help me out?

ASSISTANT: Sure, please wait a minute.

USER: Please take your time.

ASSISTANT: I have found your existing reservation. Can you tell me your alteration details?

USER: My travelling airport codes are 05/16 and 05/18.

ASSISTANT: Ok, can I know your airport codes?

USER: My travelling airport codes are DTW and PHL.

ASSISTANT: Thanks for waiting, we found a flight with your provided information in Hawaiian airline with 1 connection and the fare is 100. Shall I confirm your ticket with this airline?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking flight ticket.

ASSISTANT: Most welcome.