You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kevin Young, want to alter my recent reservation. Please help me out with that.

ASSISTANT: Sure, I will help you.

USER: Thanks.

ASSISTANT: Please wait a moment, I will check your previous reservation.

USER: Sure.

ASSISTANT: Kevin, I found your reservation. Please help me with your nearest airport codes.

USER: That's good, my source is from SEA and my destination will be for ORD.

ASSISTANT: Can I have your planned journey dates please?

USER: Sure, my journey dates are from 06/20 to 06/22.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your waiting, I found a flight for you in Delta airlines with fare 100. Can I proceed?

USER: Please proceed.

ASSISTANT: Ok, your booking is confirmed with flight number 1008.

USER: Thank you.

ASSISTANT: Thank you for approaching us.