You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you out today?

USER: I need to book a flight ticket from LGA to AUS. Can you help me in my booking?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please know your time concerns to travel?

USER: I am planning to return in the afternoon flight.

ASSISTANT: To proceed further, may I have your name?

USER: Myself John Perez.

ASSISTANT: Please send me your travelling dates.

USER: I will start my journey on May 1st and I will return on May 3rd.

ASSISTANT: Are you willing to travel with a connecting flight?

USER: Yes, I need a stopover in my journey.

ASSISTANT: Do you have any airline preference?

USER: I am comfortable to travel in major airlines.

ASSISTANT: Please wait for a while, I will get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, but no flights are found in search on respective dates of your travel.

USER: Not an issue. Thank you for your kind information.

ASSISTANT: Thanks for reaching us.