You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to reserve my ticket from LGA to IAD, can you please help me in reserving my ticket?

ASSISTANT: Sure, could you please forward your travelling dates?

USER: Sure, my planned dates of journey are from Jul, 26 to Jul, 28.

ASSISTANT: Can I know your connection limit?

USER: Yes, I want to fly in a direct flight.

ASSISTANT: Do you have any class preference?

USER: I am ok with any class preference.

ASSISTANT: May I know your name?

USER: Sure, my name is Kathleen Hill.

ASSISTANT: Sorry, there are no flights available on your travelling dates.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for reaching us.