You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Susan Campbell.

ASSISTANT: Nice to meet you Susan.

USER: I want a flight ticket from IAD to SFO, can you please book a ticket if it is available?

ASSISTANT: Sure, may I know the journey dates please?

USER: My travelling dates are 05/08 to 05/10.

ASSISTANT: I found a flight for you with UA airline and it costs you 100. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us. Have a safe flight.