You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to book a ticket from EWR to DEN. Can you please help me out?

ASSISTANT: Sure, may I know your planned trip dates?

USER: I am planning to travel on July 10 and return back on July 12.

ASSISTANT: Do you have any other requirements?

USER: I am looking for a connecting flight.

ASSISTANT: Can you please share me your name?

USER: My name is Edwards Thomas.

ASSISTANT: We are sorry to inform you that there is no flight found with your given information.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you.