You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: My name is Mark Adams, I want to book a flight from SFO to PHL to attend a meeting. Can you help me with booking?

ASSISTANT: Sure, please share your travelling dates.

USER: I will fly on May 31 and return on June 02.

ASSISTANT: Can you please mention your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any preferences for booking?

USER: I want a economy class airline and return flight in morning.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your planned dates of travelling.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for availing us.