You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to make a holiday trip to Philadelphia, can you please make a reservation from ORD to PHL?

ASSISTANT: Sure, may I know your travelling dates?

USER: My journey dates are on Feb 28th and Mar 1st.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a flight with single connection.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Nicole Brown.

ASSISTANT: Sorry, there are no flights found with your details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.