You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Dennis Hernandez here. Can you book me a ticket from EWR to DEN?

ASSISTANT: On which dates you are willing to travel?

USER: I would like to travel on 10/03 and 10/05.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: There is no flights available on this route.

USER: No issues, thank you for the help.

ASSISTANT: Most welcome.