You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: Help me in changing my previous flight reservation. As I modified my travelled dates.

ASSISTANT: Sure, may I know your name?

USER: Alexander Lewis here.

ASSISTANT: Please give me a moment to check your ticket status.

USER: Sure.

ASSISTANT: I found your reservation, please provide your itinerary dates.

USER: I desired to travel in between Jan 26 and Jan 28.

ASSISTANT: May I know your genesis and terminus airport codes?

USER: I need to travel from SEA to MSP.

ASSISTANT: Which class do you prefer?

USER: No class required, but make sure that I need a connected flight.

ASSISTANT: May I know your name?

USER: Alexander Lewis here.

ASSISTANT: Spirit airlines with flight 1008 is providing a connecting flight and ticket costs you 100 in economy class.

USER: Sure, proceed to book it.

ASSISTANT: Your ticket is reserved Alexander Lewis. Flight departs at 9:00 hours and arrives at 18:00 hours.

USER: Thanks for changing.

ASSISTANT: Thank you for approaching us.