You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: I am Margaret Thompson. I am planning to visit the South Mountain Park in Phoenix, could you please help me in booking a flight ticket from Austin.

ASSISTANT: Sure, please share your airport codes.

USER: My airport codes are TX - AUS and AZ - PHX.

ASSISTANT: May I know your planned dates of journey?

USER: I want to fly on 05/14 and return on 05/16.

ASSISTANT: Thanks for sharing your credentials. There are no flights going on your route at this moment.

USER: Not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you.