You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I would like to travel from ORD to DFW as a business trip. Can you do the reservation?

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

USER: My journey dates are 04/30 and 05/02.

ASSISTANT: May I know your good name?

USER: Linda Harris here.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.