You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How could I aid you today?

USER: I am looking for a flight ticket from LGA to HOU. Can you please help me out?

ASSISTANT: Sure, to book a ticket may I know your planned travel dates?

USER: My travelling dates are May 20 and May 22.

ASSISTANT: Can you please share me your good name?

USER: Myself Rachel Miller.

ASSISTANT: Do you have any other specifications?

USER: I need business class ticket with single connection flight.

ASSISTANT: We are sorry to inform you that there is no flight found with your matching details.

USER: Ok, thank you for checking.

ASSISTANT: Thank you for opting us.