You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rebecca Anderson.

ASSISTANT: How can I assist you, Rebecca?

USER: I am planning a trip to meet my grandparents, can you please book me a ticket from DTW to PHL?

ASSISTANT: Sure, may I know your preferred trip dates please?

USER: Ok, my preferred dates of trip are 06/20 and 06/22.

ASSISTANT: Please wait for a minute.

USER: Sure, take your time.

ASSISTANT: I found a flight in Southwest airlines with price 200. Shall I book the ticket for you?

USER: Please go ahead for booking the ticket.

ASSISTANT: Your ticket is confirmed and the flight number is 1013.

USER: Thank you for your help me.

ASSISTANT: Thank you for contacting us.