You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Cynthia Lewis here.

ASSISTANT: Cynthia Lewis, how may I render you?

USER: I would like to meet my parents who are staying in BOS. Can you please help me to book a flight from LGA?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My travelling dates are from Apr 7 to Apr 9.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a connecting flight with depart time on afternoon and return time on evening.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights are available on your route based on your requirements.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for approaching us.