You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samantha Miller.

ASSISTANT: How can I amend you?

USER: Will you reserve a seat to Los Angeles, LAX?

ASSISTANT: Sure. Do you have any connection limit?

USER: I prefer to travel with a connecting flight.

ASSISTANT: Kindly, mention your travelling dates.

USER: Travelling dates are 11/01 to 11/03.

ASSISTANT: May I know your source code?

USER: I would like to travel from Philadelphia, PHL to attend my nephew's wedding.

ASSISTANT: Please, hold on.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found on your given requirements.

USER: Ok. Thank you.

ASSISTANT: Thank you.