You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Christine Moore here. Please help me out in booking the ticket from LAX to LGA.

ASSISTANT: Sure, we are here to help you. May I know on which dates you preferred to travel?

USER: My trip dates will be 08/13 to 08/15.

ASSISTANT: Is there any specification in your journey?

USER: Business is my class preference with 1 connection limit and depart time must be in the morning.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: Sorry to notify that, there are no flights are available matching your preferences.

USER: That's ok, thank you.

ASSISTANT: Thank you for approaching us.