You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Ryan Lopez here, I want to reserve my ticket from LAX to PHL, can you please help me to book a ticket?

ASSISTANT: Please let me know your travelling dates.

USER: Sure, my preferable dates of journey are from 04/19 to 04/21.

ASSISTANT: Ok. Connecting flight can be booked with airline UA for price 300.

USER: Ok, please go ahead with this ticket booking.

ASSISTANT: Ticket is booked with flight number 1025.

USER: Thank you for your help in booking my ticket.

ASSISTANT: Thank you.