You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: As I am a scientist, I want to attend science festival with my students at Las Vegas. Can you do the reservation?

ASSISTANT: Sure, may I know your planned journey dates?

USER: My trip dates are June 18th and June 20th.

ASSISTANT: Help me with your airport codes?

USER: My airport codes are CLT-LAS.

ASSISTANT: May I know your good name please?

USER: Melissa Baker here.

ASSISTANT: We found a connecting flight 1001 in AA airline with fare 100. Shall I proceed?

USER: Please carry on.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you.