You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Jacob Adams here, I want to reserve my ticket from LGA to IAH, can you please help me out?

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, my planned dates of journey are from Nov, 21 to Nov, 23.

ASSISTANT: Is there any class preference?

USER: Yes, I need a economy class.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a direct flight.

ASSISTANT: Ok, please wait a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry, there were no flights found on your specifications.

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

ASSISTANT: Thank you for opting us.