You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I am Matthew Baker. Can you please help me in booking a flight ticket from LGA to PHL?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I want to fly on Jan 19 and return on Jan 21.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Not an issue. Thank you.

ASSISTANT: You are welcome, have a great day.