You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Mark Scott here.

ASSISTANT: How can I assist you today?

USER: I would like to book a ticket from PHL to EWR, can you please help me with that?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: The travel dates are from 07/09 to 07/11.

ASSISTANT: Do you have any specifications?

USER: I would like to return during morning time.

ASSISTANT: Do you have any specifications about class?

USER: No, but I need a flight with 1 connection limit.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no flights found under preferable details.

USER: That's ok, thank you for your help.