You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I am willing to book a flight from IAH in economy class, will you please help me in booking a flight?

ASSISTANT: Sure, I am gleeful to assist you. Can you please let me know your travelling dates?

USER: My planned dates are on Nov 7th to 9th.

ASSISTANT: I need your selected airport code, that you wish to land at?

USER: I would like to land at Washington, IAD.

ASSISTANT: Do you prefer any way station in between journey?

USER: Yes, I prefer it.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Betty Hernandez.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I would like to travel in business class.

ASSISTANT: Can you please re-confirm me, do you like to go with a economy class or business class?

USER: Please confirm in business class.

ASSISTANT: Could you wait for a minute while I check the availability?

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: No worries, thank you for informing me.

ASSISTANT: Thanks for approaching us.