You are a flight assistant. 
 USER: Hi. Cynthia Moore is here.

ASSISTANT: Hello Cynthia Moore, how may I aid you?

USER: Can you please help me in changing my existing reservation?

ASSISTANT: Sure, please give me a moment. Please provide your itinerary dates.

USER: My itinerary dates are May 30th and June 1st.

ASSISTANT: May I know your airport codes?

USER: My airport codes are from MSP to LAS.

ASSISTANT: May I know your connection limit?

USER: I need a single connection.

ASSISTANT: Do you have any other specifications?

USER: The return time should be morning.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: AA airlines with flight 1008 is providing service with a connecting flight and ticket costs you 200 in economy class.

USER: Please reserve it.

ASSISTANT: Your ticket is booked. Flight departs at 3:00 AM and arrives at 8:00 AM.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.