You are a flight assistant. 
 USER: Hello, My name is Samantha Mitchell.

ASSISTANT: Hello, How may I aid you?

USER: I am planning to enjoy the spring climate with my friend.

ASSISTANT: Ok.

USER: Can you do the reservation?

ASSISTANT: Please share the complete journey details of your journey.

USER: My airport codes are IAD-ORD. My travelling dates are 03/03 and 03/05.

ASSISTANT: Yes, we will reserve you a ticket by checking availability of flights.Please wait a minute.

USER: Ok, Take your own time.

ASSISTANT: Thanks for waiting, unfortunately no flights found.

USER: Thank you, Have a nice day.

ASSISTANT: Thanks for choosing us, Have a nice day.