You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Frank Robinson.

ASSISTANT: How can I aid you?

USER: I want to visit Chicago ORD to meet my grandfather. Can you make a reservation for me?

ASSISTANT: Sure, may I know your planned travel dates to check for the flight availability?

USER: Sure, my itinerary dates are on Mar 07 and return on Mar 09.

ASSISTANT: May I know your planned source airport code?

USER: Ok, my source code is from LAX.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a single connecting flight.

ASSISTANT: Sorry, there are no flights available for your desired dates.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.