You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Thomson Walker here.

ASSISTANT: How may I aid you?

USER: Please help me out in booking the ticket from PHL to LGA.

ASSISTANT: Sure, I am happy to help you with the ticket booking. Can you please provide me your travel dates?

USER: My trip dates will be Oct 28 to Oct 30.

ASSISTANT: Ok, do you have any preferences?

USER: I want direct flight.

ASSISTANT: Ok, please give me a minute. I will check the flight and get back to you.

USER: Ok.

ASSISTANT: Sorry to inform you that, I have not found any flight in this route on the dates you have given.

USER: That's ok.

ASSISTANT: Most welcome. Thank you for choosing us.

USER: Thank you.