You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in flight ticket booking process from SFO to DFW?

ASSISTANT: Sure, we are here to help you.

USER: Thank you for your response.

ASSISTANT: Can you share me your travelling dates?

USER: I want to take off on July 11 and book my return ticket also on July 13.

ASSISTANT: May I know your name?

USER: Sure, my name is Benjamin Evans.

ASSISTANT: Do you have any other specifications?

USER: I want to travel in business class flight.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: Oh! It's ok, no problem. Thank you for your information.

ASSISTANT: Thanks for approaching us.