You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: Dorothy White here. I am planning to travel from OAK to SFO to meet my grandparents.

ASSISTANT: Ok.

USER: Can you please book the ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: I am departing on 12/18 and return on 12/20.

ASSISTANT: Give me a minute.

USER: Ok.

ASSISTANT: There is a flight with number 1029 in airline Delta. Can I book it?

USER: Alright, please proceed for booking.

ASSISTANT: Your ticket is booked, happy journey.

USER: Thank you for your service.

ASSISTANT: Thank you for contacting us.