You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I want to change my existing reservation which is done recently due to some problems, can you please help me?

ASSISTANT: Sure, I am gleeful to help you with that. Please provide your name to check your previous reservation.

USER: Thank you. Sure, my name is Pamela Davis.

ASSISTANT: Wait for a while to check.

USER: Sure, I will wait.

ASSISTANT: I have found your reservation. Can you please provide your new journey airport codes?

USER: Sure, my airport codes are from EWR to SEA.

ASSISTANT: Ok, may I know your departure and return dates of travelling?

USER: Ok, my planned dates of journey are from Jan, 25 to Jan, 27.

ASSISTANT: Do you have any connection limit?

USER: Yes, I want a connecting flight to fly with it.

ASSISTANT: Any other preferences do you have?

USER: Not required.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure, I will wait.

ASSISTANT: Based on your information, I have found a flight with 1 connection having with the fare of 100 provided by Hawaiian airlines in economy class. Are you ok with this flight?

USER: Ok, no problem.

ASSISTANT: Can I book it?

USER: Please book it.

ASSISTANT: Ok, your ticket has been booked successfully in flight number 1001.

USER: Thank you for your service in booking my ticket.

ASSISTANT: Thank you for reaching us, have a great day.