You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

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

ASSISTANT: Sure, please share your journey airport codes?

USER: My airport codes are IAH-MSP.

ASSISTANT: When are you willing to travel?

USER: Dates are 01/23 and 01/25.

ASSISTANT: May I know your good name please?

USER: Melissa Jackson here.

ASSISTANT: Sorry to say that no flights are available with your request.

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

ASSISTANT: Thanks for approaching us.

USER: Thank you.