You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Brain Campbell. I want to change my reservation because of my health issue.

ASSISTANT: Ok, I will help you. Please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time. We found a reservation on your name. Can you please provide your new journey dates?

USER: Ok, my new travelling dates will be 05/20 to 05/22.

ASSISTANT: Which places would you like to board and land?

USER: My boarding point is Washington DC-IAD, my landing point is CA-SFO.

ASSISTANT: Just wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. We found a flight with Delta airlines and flight number is 1008 matches your details. Shall I proceed with booking?

USER: Please confirm my flight ticket.

ASSISTANT: Your reservation has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for connecting with our service.