You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I oblige you today?

USER: Will you please change my existing reservation? Because, my friends suddenly changed the trip to other place.

ASSISTANT: Ok, may I have your name please?

USER: I am Steven Nelson.

ASSISTANT: Please wait a while, I will check the reservation list and revert to you.

USER: Ok.

ASSISTANT: Thanks for your time.

USER: Ok.

ASSISTANT: We found a reservation for you, may I know your new journey details?

USER: Sure. I will start from Houston, IAH. San Francisco, SFO is destination.

ASSISTANT: Ok.

USER: 10/01-10/03 are the travel dates.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: We found a flight in JetBlue airline with single connection and the price is 100. Shall I proceed?

USER: Ok. You can confirm it.

ASSISTANT: Your booking is done with 1007 flight number.

USER: Thank you.

ASSISTANT: Thank you for reaching us.