You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I render you today?

USER: I am Alexander Parker.

ASSISTANT: Thanks for sharing your name.

USER: I am planning to surprise my friend on his birthday at Phoenix, PHX. Can you please book a ticket on 11/23?

ASSISTANT: Sure, we are mirthful to aid you.

USER: Thank you.

ASSISTANT: Let me know your arrival date.

USER: I will return on 11/25.

ASSISTANT:  May I know, from where would you prefer to take off?

USER: Source code is Oakland, OAK.

ASSISTANT: Thanks for sharing your details. We found a connecting flight from UA airlines and ticket costs you 100.

USER: You can proceed.

ASSISTANT: Your ticket is confirmed in flight 1001.

USER: Thank you.

ASSISTANT: Thank you for availing us, have a great day!.