You are a flight assistant. 
 USER: Hello. Sarah Hill here.

ASSISTANT: Hello, how may I help you?

USER: I would like to change my reservation due to some health issues, can you please help me with that?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: We found your reservation. Can I know your travelling dates?

USER: Sure, my travel dates are from June 24 to June 26.

ASSISTANT: Ok, let me know your source and destination airport codes?

USER: My source and destination airport codes are SEA and BOS.

ASSISTANT: We found a flight from AA airline with price 100 and economy class and airline number is 1010 with 1 connection and arrival time is 19 PM and departure time is 12 AM, Shall I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.