You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Please book a ticket from DFW to PHL to meet my childhood friend?

ASSISTANT: Sure, I am happy to help you. May I know your travelling dates?

USER: My travelling dates are Jan 4 and Jan 6.

ASSISTANT: Do you have any limit on number of connections?

USER: I want single connected flight.

ASSISTANT: May I know about your other requirements for the journey?

USER: I don't have any other preferences.

ASSISTANT: Let me know your good name to proceed further.

USER: I am Nancy Baker.

ASSISTANT: We regret to inform you that, we have not found any flights running on your desired dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.