You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may i render you?

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

ASSISTANT: Sure, may I know when do you want to travel?

USER: My journey dates are 10/30 and 11/01.

ASSISTANT: Kindly share your airport codes.

USER: My airport codes are DFW-CLT.

ASSISTANT: May I know your name?

USER: Samuel Green here.

ASSISTANT: Thanks for sharing your credentials. It's unfortunate that there are no flights available on your requested dates.

USER: No issue, I will check with another airline.

ASSISTANT: Thank you for opting us.

USER: Thank you.