You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Sarah Hall here.

ASSISTANT: How can I assist you today?

USER: I need your help in checking of a flight between Los Angels and New York, so can you please check out is there any flight available for me?

ASSISTANT: Sure, will you provide your travelling dates please?

USER: I would like to board on 10/17 and de board on 10/19.

ASSISTANT: Please mention the airport codes that you want to travel.

USER: Sure, I want to travel from LAX to LGA.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. There is no flights found under your details.

USER: Oh! so sad to hear. Anyway, thank you for the information.

ASSISTANT: Welcome, have a great day.