You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best serve you today?

USER: Can you help me in booking a flight ticket from LAS to JFK?

ASSISTANT: Sure, please share me your trip dates.

USER: I want to travel on 01/26, and return on 01/28.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know your airlines specifications?

USER: I am comfortable with any airline.

ASSISTANT: For booking, we need your good name. Please provide it.

USER: I am Sandra Miller.

ASSISTANT: Please share me if you have any other preferences.

USER: No, I am fine with any flight.

ASSISTANT:  Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thanks for the information.