You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Please book me a flight ticket from IAD to SFO to meet my family.

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: I have planned to travel on Oct 02nd and return on Oct 04th.

ASSISTANT: Ok, please let me know the timings of your journey.

USER: I want to return at evening time.

ASSISTANT: Do you prefer any specific class to travel?

USER: I prefer  connecting flight.

ASSISTANT: Do you have any more specifications to get best flight for you?

USER: No.

ASSISTANT: Can I have your good name please to proceed further?

USER: Myself Christine Smith.

ASSISTANT: Ok, please wait a moment to check flight availability.

USER: Ok, I will wait.

ASSISTANT: JetBlue airlines running a flight in your route with connection 1 and the ticket fare is 100 in economy class. Shall I proceed with booking?

USER: Ok, please book this ticket.

ASSISTANT: Ok Christine Smith, your ticket booking has done and the flight number is 1018.

USER: Thank you.

ASSISTANT: Thank you for choosing us, have a great journey.