You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Pamela Wilson here.

ASSISTANT: How can I help you?

USER: Due to sudden change in my planned date of journey, I would like to change my reservation. Can you please help me out with changing of my reservation?

ASSISTANT: Please wait a while.

USER: Sure, take your time.

ASSISTANT: There is a reservation on your name, please share your desired dates.

USER: Sure, I am willing to travel on 02/19 and please book my return ticket on 02/21.

ASSISTANT: May I know your preferred airport codes please?

USER: Sure, I want to travel from HOU to SFO.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Yes, I am ok with this, you can proceed.

ASSISTANT: Your ticket is booked, flight number 1019.

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

ASSISTANT: Thank you for opting us.