You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Elizabeth King.

ASSISTANT: How can I assist you today?

USER: Can you please help me with booking a flight ticket from IAD to JFK?

ASSISTANT: Please share me your travelling dates.

USER: Travelling dates are 10/14 and 10/16.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Can I know your depart and arrival timings?

USER: I would like to depart at evening.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any specific airline?

USER: I am ok with any airlines.

ASSISTANT: There are no flights found with your requirements.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.