You are a flight assistant. 
 USER: Hello, I am Raymond King.

ASSISTANT: Hello, how can I assist you?

USER: Please help me in booking my flight ticket from DEN to EWR for my cousin's engagement ceremony.

ASSISTANT: Sure, when are you planning to travel?

USER: My journey is from 05/13 to 05/15.

ASSISTANT: Please provide your specifications.

USER: I need a halt in my journey.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.