You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What type of assistance are you expecting from me?

USER: I am a scientist and I want to do some research on plants to submit a documentary in my university, so can you help me for booking a flight ticket from LGA?

ASSISTANT: That's good. Will you please share your source and destination airfield codes?

USER: My source airport code is LGA and destination airport code is ATL.

ASSISTANT: Sure, I am mirthful to help you. Please provide your travelling details also.

USER: I am willing to start my journey on 09/23 and I would like to return back on 09/25.

ASSISTANT: Ok, can I put you on hold for a moment while I am checking the availability of flight?

USER: Sure, I will wait for your response.

ASSISTANT: I am very sorry to say this, all flights are already booked for the month of September.

USER: That's ok, thank you for checking. I will try to go through another way to travel.

ASSISTANT: May I know your name for documentation purpose?

USER: My name is Virginia Baker.

ASSISTANT: Do you have any other required dates to travel?

USER: No, thank you for your concern.

ASSISTANT: Welcome. have a nice day. Thank you for availing us.

USER: Welcome.