You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Karen White. Can you please book a flight ticket from IAD to SFO? As I need to go San Francisco to meet my friend.

ASSISTANT: Sure, I am here to help you. May I know your trip dates?

USER: Thank you. I need to travel on dates of Sept 09 and Sept 11.

ASSISTANT: Would you like to prefer business class or economy class?

USER: I am ok with any class actually.

ASSISTANT: Do you prefer any way station in your route?

USER: Actually yes but direct flight is also fine with me.

ASSISTANT: Do you have any specific timings to depart and arrive?

USER: Yes, I would like to depart in afternoon time.

ASSISTANT: We found a connecting flight with fare of 300 and 1024 flight number. Shall I reserve this for you?

USER: That is fine, please proceed with booking. Are you booking or not? I am having another work, please be quick.

ASSISTANT: Your seat has been reserved with Hawaiian Airlines in economy class and your departure time is in the afternoon at 15:00 PM and return time is in evening time at 1:00 AM.

USER: Thank you for your help.

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