You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Stephanie Walker here.

ASSISTANT: Can you please tell me how can I assist you?

USER: I want to change my reservation. Can you please help me?

ASSISTANT: Ok, your reservation found. Can you please tell me your travel dates?

USER: My travel dates are from 01/14 till 01/16.

ASSISTANT: Ok, May I know your trip codes?

USER: My airport codes are from IAH to EWR.

ASSISTANT: I found a flight ticket with price 100 and connection limit is 1 with 1004 flight number.

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.