You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Melissa Baker here.

ASSISTANT: How may I assist you today?

USER: Can you book a flight ticket for my airport codes that is from DCA to LAS?

ASSISTANT: Sure, may I know your travel dates?

USER: The travel dates are from 27 July to 29 July.

ASSISTANT: Please share me your name.

USER: I am Melissa Baker.

ASSISTANT: Flight-1029 is available with American airlines having single connection and the ticket costs you 100 only in economy class. Are you comfortable with this flight?

USER: I am fine with the airlines. You can book it.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.