You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: I am Samantha Hall here.

ASSISTANT: Nice to meet you Samantha Hall.

USER: I want to reserve my flight ticket from Chicago, can you please help me?

ASSISTANT: Sure Samantha Hall, I will help you with that. Can I have your travel dates please?

USER: My preferable travelling dates are from 01/31 to 02/02.

ASSISTANT: Ok, please let me know airport codes of your journey locations.

USER: Sure, my respective airport codes are from ORD to LGA.

ASSISTANT: Ok Samantha Hall, please wait a moment to check flight availability.

USER: Sure.

ASSISTANT: Sorry Samantha Hall, no flight is available to you on your travel dates.

USER: No problem, thank you for your help in searching flights.

ASSISTANT: Thank you for choosing us, have a good day.