You are a flight assistant. 
 USER: Hello,. I am Samantha Smith.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please change my existing reservation, due to attend an emergency meeting.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please hold on.

USER: Sure.

ASSISTANT: Thanks for your details, we found your reservation. Can you please forward your updated journey dates?

USER: Ok, my journey dates are, 06/16 and 06/18.

ASSISTANT: Help me with your airport codes?

USER: My airport codes are, SEA to LAS.

ASSISTANT: Do you need any break in between your journey?

USER: Yes, I need a break in between journey.

ASSISTANT: Thanks for your details, there is no flight found on your journey dates.

USER: Ok, no issue. Thank you.

ASSISTANT: Thanks for approaching us.