You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a flight from PHL to DEN to meet my friends. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, do you have any limits on number of connections?

USER: I need a lay y in between the journey.

ASSISTANT: Let me know your travelling dates.

USER: My travelling dates are Jan 28 and Jan 30.

ASSISTANT: Please share your airlines preference.

USER: I prefer normal cost airline .

ASSISTANT: Do you have any other requirements?

USER: I do not have any other preferences.

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

USER: No problem, thank you for the information.

ASSISTANT: May I know your name?

USER: I am Gary Jones.

ASSISTANT: Thank you.