You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Christopher Walker.

ASSISTANT: How can I assist you?

USER: I have to attend a meeting at Philadelphia, can you please help me to book my flight ticket from CLT to PHL?

ASSISTANT: Ok, may I know your travelling dates?

USER: Sure, I will depart on 11/19 and return on 11/21.

ASSISTANT: Here is a flight ticket with fare 100 and 1015 as flight number with Hawaiian airline. Shall I proceed for booking?\.

USER: Yes, please book the ticket for me.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you so much for your help.

ASSISTANT: Thank you for reaching us.