You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me to reserve a flight ticket from LAS to PHL?

ASSISTANT: Sure, when do you want to travel?

USER: My travelling dates are 14 and 16 of June.

ASSISTANT: Ok, Do you have any class preference?

USER: I prefer to travel in economy class.

ASSISTANT: Ok, Kindly mention your connection limit.

USER: No.

ASSISTANT: Ok, Is there any other preferences?

USER: No.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for your patience, we did not find any flights with your given details.

USER: It's ok, not a problem, thank you.

ASSISTANT: May I know your name?

USER: I am Jeffrey Carter.

ASSISTANT: Thank you for choosing us.