You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you now?

USER: I want to travel from DFW to PHL. Can you help me to book a flight ticket?

ASSISTANT: Ok, may I know your planned dates for this trip?

USER: I want to travel in the flight on Nov 04 and Nov 06.

ASSISTANT: Can I know your name?

USER: Nicole Robinson.

ASSISTANT: Do you have any connection preference?

USER: I want to have a connection of 1.

ASSISTANT: May I know your other specifications?

USER: I don't have any.

ASSISTANT: Iam so sorry to tell you, there is no flight available for your journey.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for approaching our services.