You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I'm William Wilson.

ASSISTANT: Hello Wilson.

USER: I want to travel from DCA to SFO.

ASSISTANT: Can you provide your dates of journey?

USER: My travel dates are from 03/19 to 03/21.

ASSISTANT: Please give me a moment. Thank you for your patience, there is a flight available with Hawaiian airlines, are you ok to travel in this flight?

USER: Yes, please book the ticket.

ASSISTANT: Your ticket is confirmed with 1000 flight, have a comfortable journey.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.